Download Extra Practice Unit 1

Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
Unit Vocabulary

Coefficient

Constant

Equation

Exponent

Expression

Inequality

Irrational numbers

Linear

Literal equation

Non-Linear

Products of Factors

Rational Numbers

Term

Variable
Lesson 1 Solving One- Step Linear Equations
Solve each equation; be sure to check your solution.
2
1
1. X – 10 = 4
3. = 𝑚 −
5
2. - 6 = k – 6
5
4. n – 3.2 = 5.6
1
5. 16 = m – 9
6. x + 7 = 9
Algebra I
Unit 1
7. 0.7 = r + 0.4
1
8.
𝑑+2=1
9.
–8+b=2
3
5
10. – 4 + 𝑧 = 4
𝑘
11. – 4 = −5
12.
𝑚
3
= 1.5
13. 7x = 56
Solving Single-Variable Equations and inequalities
14. 13 = -26w
15. 16 = 4c
16. 0.5y = -10
5
17.
9
𝑣 = 35
5
18.
4
= 3𝑦
2
4
19.
6
𝑗=
2
3
21.
3
1
16
= 𝑧
8
22. −4.8𝑣 = −6𝑣
23. 1 = 𝑘 − 8
24. 𝑢 − 15 = -8
25. 𝑡 + 25 = −5
1
2
26. – 6 + ℎ = 3
1
27. 2 = 𝑑 + 4
𝑐
20. 8 = 7
2
Algebra I
Unit 1
3
1
4
4
28. 1 = − + 𝑤
29.
31. 4x = 28
34.
32. 84 = -12a
𝑘
=8
4
30. 6 =
Solving Single-Variable Equations and inequalities
𝑡
−3
8
1
𝑟=9
4
35. 10 = 5 𝑦
33. ½ d = 7
5
36. 15 = 6 𝑦
−5
Lesson 2 Solving Multi-Step Linear Equations
Solve each equation; be sure to check your solution.
1. 10 – 6 – 2x
3. 1.5 = 1.2y – 5.7
2. -4 + 7x = 3
4.
𝑛
7
+2=2
3
5.
6.
𝑞
15
2𝑥
5
1
3
−5=5
1
−2=5
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
7. 6𝑥 + 3 − 8𝑥 = 13
12. 4(x -2) + 2x = 40
17. 6h – 17 = 17
8. 8x – 21 – 5x = -15
13. -2(3 – d) = 4
18. 0.6v + 2.1 = 4.5
9. 10 – (4y + 8) = -20
14. 2 (2𝑥 − 4) = 12
10. 9 = 6 – ( x + 2)
11. 2a + 3 – 8a = 8
1
19. 3x + 8 = 18
3
20. 0.6g + 11 = 5
15. 4 (𝑥 − 12) = −4
16. 5 = 2g + 1
4
21. 32 = 5 – 3t
Algebra I
Unit 1
1
3
5
5
22. 2𝑑 + =
1
23. 1 = 2𝑥 + 2
𝑧
3
24. 2 + 1 = 2
2
25. 3 =
3
4𝑗
Solving Single-Variable Equations and inequalities
1
𝑥
2
5
5
5
27. − = −
28. 6 = -2(7 – 2c)
32. 2(x + 3) = 10
33. 17 = 3(p-5) + 8
2
29. 5(h – 4) = 8
34. 3 (6𝑥 − 12) = 18
30. -3x – 8 + 4x = 17
35. 5(1 – 2w) + 8w = 15
31. 4x + 6x = 30
36. 4x + 7 – x = 19
6
3
3
26. 4 = 8 𝑥 − 2
5
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
𝑐
37. 3( x – 4) = 48
39. 15 = 3 − 2
41. 5x + 9 = 36
38. 17 = x – 3(x + 1)
40. 2x + 6.5 = 15.5
42. 3.9w – 17.9 = -2.3
Lesson 3 Solving Linear Equations with Variables on Both Sides
1. 7k = 4k + 15
3. 4b + 2 = 3b
5. 2(y + 6) = 3y
2. 5x – 2 = 4x + 4
4. 0.5 + 0.3y = 0.7y – 0.3
6. 2k – 5 = 3(1 – 2k)
6
Algebra I
Unit 1
7. 3 – 5b + 2b = -2 – 2(1 – b)
8.
1
2
3
( 𝑏 + 6) = 𝑏 − 1
2
9. 3𝑥 + 15 − 9 = 2(𝑥 + 2)
10. 7n – 2 = 5n + 6
Solving Single-Variable Equations and inequalities
11. 4 – 6a + 4a = -1 -5(7 – 2a)
15. 2c + 7 + c = -14 + 3c + 21
12. x + 4 – 6x = 6 - 5x – 2
16. 2c – 5 = c + 4
13. -8x + 6 + 9x = -17 + x
17. 8r + 4 = 10 + 2r
14. 4y + 7 – y = 10 + 3y
18. 7x – 4 = -2x + 1 + 9x - 5
7
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
19. 2x – 1 = x + 11
23. 3c – 4c + 1 = 5c + 2 + 3
27. 5 – (t + 3) = -1 + 2(t – 3)
20. 28 – 0.3 y = 0.7y – 12
24. 6y = 8 – 9 + 6y
28. 7a – 17 = 4a + 1
21. 8x + 6 – 9x = 2 – x - 15
25. 5 + 3(q – 4) = 2( q + 1)
29. 2b – 5 = 8b + 1
22. -2(x + 3) = 4x – 3
26. 6 – 2x – 1 = 4x + 8 – 6x - 3
30. 4x – 2 = 3x + 4
8
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
31. 2x – 5 = 4x -1
33. 5x + 2 = 3x
35. 5 – (n – 4) = 3(n + 2)
32. 8x – 2 = 3x + 12.25
34. 3c – 5 = 2c + 5
36. 6(x + 7) – 20 = 6x
Lesson 4 Solving Literal Equations
Solve each equation for the indicated variable.
1. d = rt (r)
3. F = I – gt
9
2. F = 5 𝐶 + 32
(𝐶)
4. S =
𝑤−10𝑒
𝑚
9
(i)
5. M – n = 5
(w)
6.
𝑚
𝑘
=𝑥
(m)
(𝑘)
Algebra I
Unit 1
7. 5 − 𝑏 = 2𝑡
8. 𝐷 =
𝑚
𝑣
9. C = 𝜋𝑑
(𝑡)
(𝑣)
𝑚𝑠−𝑤
(𝑚)
−10
12. pq = x
(q)
𝑚
13. V = lwh (w)
14. St + 3t = 6
15. M – 4n = 8
(𝑑)
10. A = ½ bh (h)
11. e =
Solving Single-Variable Equations and inequalities
16.
𝑓+4
𝑔
(s)
(m)
(𝑓)
=6
17. 𝑏 + 𝑐 =
19. 𝑛 = 𝑝 − 6 (𝑛)
10
𝑎
18. xy – 5 = k
10
(𝑎)
(x)
20.
𝑥−2
𝑦
=𝑧
(𝑦)
21. 𝑠 = 180𝑛 − 360 (n)
𝑥
22. 5 − 𝑔 = 𝑎
1
23. 𝐴 = 2 𝑏ℎ
24. y = mx + b
(𝑥)
(𝑏)
(x)
Algebra I
25. a = 3n + 1
Unit 1
(n)
Solving Single-Variable Equations and inequalities
26. PV = nRT (T)
27. 3x + 4y = 2 (y)
Lesson 5 Real-World Applications Involving Linear Equations in One-Variable
Write an equation using the given information and solve for the indicated variable. Be sure to
show all work and explain what your answer represents.
1. Mr. Skipper’s classroom had too many desks
in it so he removed the 12 desks that were
broken to create more space. He now has 18
desks in his classroom. How many desks did
he originally have?
4. The long-distance rates of two phone
companies are: Company A $0.36 plus $0.03
per minute and Company B $0.06 per minute.
How long is a call that costs the same amount
no matter which company is used? What is the
cost of that call?
2. A 130 – pound woman burns 9.83 calories per
minute while running. She burns 3.25 calorie
per minute while walking during her cooldown. She runs for t minutes and exercises
for a total of 45 minutes. How many calories ,
to the nearest tenth, does she burn if she runs
for 35 minutes ?
5. Paul bought a student discount card for the
bus. The card costs $7 and allows him to buy
daily bus passes for $1.50. After one month,
Paul spent $29.50. How many daily bus
passes did Paul buy?
6. Jennifer is saving money to buy a bike. The
bike costs $245. She has $125 saved, and each
week she adds $15 to her savings. How long
will it take her to save enough money to buy
the bike.
3. Grant has 5 short sleeve shirts and some long
sleeve shirts. All together he has 9 shirts.
How many long sleeved shirts does he have?
11
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
7. Drew’s grandmother had money to spend
evenly on her 4 grandchildren for presents.
She spent $60 on each grandchild. How much
money did Boudreaux’s grandmother have
before she bought the presents?
11. A house painting company charges $376 plus
$12 per hour. Another painting company
charges $280 plus $15 per hour. How long is
a job for which both companies will charge
the same amount? What will the cost be?
8. Four times Greg’s age, decreased by 3 is equal
to 3 times Greg’s age, increased by 7. How old
is Greg?
12. In 2003, the population of Zimbabwe was
about 12.6 million, which was 1 million more
than 4 times the population in 1950. What is
the population of Zimbabwe in 1950?
9. Mrs. Jackson’s classroom has some rows with
4 desks and the same amount of rows with 5
desks in them. She has a total of 27 desks.
How many rows does Mrs. Jackson have in her
classroom with 4 desk in them? How many
rows does Mrs. Jackson have in her classroom
with 5 desk in them?
10. Sarah ended up with $240 in her savings
account at the end of the summer, which is
twice the amount she started with at the
beginning of the summer. How much money
was originally in her savings account at the
beginning of the summer?
13. Alex belongs to a music club. In this club,
students can buy a student discount card for
$19.95. This card allows them to buy CDs for
$3.95 each. After one year, Alex has spent
$63.40. Write and solve an equation to find
how many CDs Alex bought this year.
14. Luis deposited $500 into his bank account. He
now has $4732in his account, how much was
in his account before the deposit.
12
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
15. Tyrone spends nine dollars to get into the
movie theatre plus six dollars every time he
visits the concession stand. He spent a total of
thirty-three dollars at the movie theatre. How
many visits did Tyrone make to the
concession stand?
20. Emily ended up with $540 in her savings
account at the end of the summer, which is
$50 more than twice the amount she started
with at the beginning of the summer. How
much money was originally in her savings
account at the beginning of the summer?
7
16. After taxes Forest’s take-home pay is 10 of his
salary before taxes; what is Forest’s salary
before taxes for the pay period that resulted
in $392 of take-home pay.
21. Jon and Sara are planting tulip bulbs. Jon has
planted 60 bulbs and is planting at a rate of 44
bulbs per hour. Sara has planted 96 bulbs and
is planting at a rate of 32 bulbs per hour. In
how many hours will Jon and Sara have
planted the same number of bulbs? How many
bulbs will that be?
17. Sara paid $15.95 to become a member at a
gym. She then paid a monthly membership
fee. Her total cost for 12 months was $735.95.
How much was the monthly fee?
22. The Baseball Birthday Package at a park cost
$192; this includes tickets, drinks, and cake
for a group of 16 children. How much does it
cost for each child?
18. Kate is saving to take an ACT prep course that
costs $350. So far, she has saved $180, and
she adds $17 to her savings each week. How
many more weeks must she save to be able to
afford the course?
23. Max lost 23 pounds while on a diet. He now
weighs 184 pounds; how much did Max
initially way?
19. Lisa earned $6.25 per hour at her after-school
job. Each week she earned $50, how many
hours does she work each week?
24. Over 20 years, the population of a town
decreased by 275 people to a population of
850 people; what was the original population
of the town
13
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
Lesson 6 Solving One-Step Linear Inequalities in One- Variable
Solve the following inequalities and graph the solutions.
1. X + 9 < 15
7. -8x > 72
2. d – 3 > -6
8. -50 ≥ 5𝑞
3. 0.7n ≥ 𝑛 − 0.4
9.
4. 3x > -27
5.
2
3
𝑟<6
6. 4𝑘 > 24
3
4
𝑔 > 27
13. 7x > -42
𝑥
14. −3 ≤ −5
15. x + 12 < 20
10. s + 1 ≤ 10
16. d - 0 5 > -7
11. q – 3.5 < 7.5
17. 2.4 ≤
1
12. 2 2 > −3 + 𝑡
14
𝑚
3
18. 0.9 > n – 0.3
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
19. 12 < p + 6
23. 10 > -2x
27. -40 > 8b
20. ¾ r < 12
24. -5 + x 6
28. 4.25 > -0.25h
21. w + 3 > 6
25. 12 . −6
22. 3b > 27
29. z – 2 > -11
𝑡
30. 4 > -8g
26. -5 + x < -20
Lesson 7 Solving Multi-Step Linear Inequalities in One- Variable
Solve the inequalities and graph the solutions.
1. 160 + 4f < 500
3. -12 > 3x + 6
2. 7 – 2t < 21
4.
15
𝑥+5
−2
>3
Algebra I
5.
Unit 1
1−2𝑛
3
Solving Single-Variable Equations and inequalities
10. 3 + 2( x + 4) > 3
≥7
5
3
1
6. – 4 + (−8) < −5𝑐 − 2
11.
7. −3(3 – x) < 42
12. 45 + 2b > 61
8.
9.
4
5
1
< 8𝑥 −4
8
13. 8-3y > 29
3
𝑥+2>5
14. 2 – (-10) > -4t
2m + 5 > 52
16
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
15. -4(2 – x) < 8
16.
2
1
20. 4c – 7 > 5
1
21.
𝑓+2>3
3
4+𝑥
3
> −4
17. 2m + 1 > 13
22. 1 < 0.2x – 0.7
18. 2d + 21 < 11
23.
19. 6< -2x + 2
3−2𝑥
3
≤7
24. 2𝑥 + 5 ≥ 2
17
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
25. 4( x + 2) > 6
26.
1
2
30. 3(j + 41) < 35
31. 4r – 9 > 7
3
𝑥+3<4
4
32. 3< 5 – 2x
27. 4 – x + 62 ≥ 21
28.
33.
4 – x > 3 ( 4-2)
𝑤+3
2
>6
34. 11w + 99 < 77
29. 0.2 ( x – 10) > -1.8
18
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
38. f + 2 ½ < -2
1
35. 9 ≥ 𝑣 + 3
2
39. -2 > 7x – 2 (x – 4)
36. -4x – 8 > 16
40.
2
37. 8 − 3 𝑧 ≤ 2
3𝑛−8
5
≥2
Lesson 8 Solving Linear Inequalities in One-Variable with Variables on Both Sides
Solve each inequality and graph the solutions.
1. x< 3x + 8
3. 6(1-x) < 3x
2. 6x – 1 < 3.5x + 4
4. x + 5 > x + 3
19
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
5. 2(x+3) < 5 + 2x
10. x – 2 < x + 1
6. y < 4y + 18
11. 2(k – 3) > 6 + 3k – 3
7. 4m – 3 < 2m + 6
12. 0.9y > 0.4y – 0.51
8. 4x > 7x + 6
13. 4( y-1) > 4y + 2
9. 5t + 1 < -2t – 6
14. 1.6x < -0.2x + 0.9
20
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
15. 2x – 7 < 5 + 2x
20. 4v + 1 < 4v -7
16. 2(3y – 2) – 4 > 3(2y + 7)
21. 7y + 1 < y – 5
17. 5(2 – r) > 3(r – 2)
22. 27x + 33 > 58x – 29
18. 0.5x – 0.3 + 1.9x < 0.3x + 6
23. -3r < 10 – r
19. 2x >4x – 6
24. 2(x-2)< -2( 1-x)
21
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
25. 5c – 4 > 8c + 2
30. 2(6 – x) < 4x
26. 4.5x – 3.8 > 1.5x – 2.3
31. 4x > 3( 7 – x)
27. 4(y + 1) < 4y + 2
32.
28. 5(4 + x) < 3(2 + x)
1
2
3
1
𝑓 + 4 ≥ 4𝑓
33. -36.72 + 5.65t < 0.25t
29. -4 (3 – p) > 5( p + 1)
34. b – 4 > b - 6
22
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
Lesson 9 Real- World Applications Involving Linear Inequalities in One Variable
Use the given information to write an inequality, solve the inequality and graph the inequality.
1. The memory in Tenea’s camera phone allows
6. Mrs. Lawrence wants to buy an antique bracelet
her to take up to 20 pictures. Tenea has already
at an auction. She is willing to bid no more than
taken 16 pictures. How many more pictures can
$550. So far, the highest bid is $475 Write and
Tenea take?
solve an inequality to determine the amount
Mrs. Lawrence can add to the bid.
2. The Daily Info Newspaper charges a fee of $650
plus $80 per week to run an ad. The People’s
Paper charges $145 per week. For how many
weeks will the total cost at Daily Info be less
expensive than the cost at People’s Paper?
3. Sami has a gift card. She has already used $14 of
the total value, which was $30. How much more
can she spend?
4. To win the blue ribbon for the Heaviest
Pumpkin Crop at the county fair, the average
weight of John’s two pumpkins must be greater
than 819 pounds. One of his pumpkins weighs
887 pounds. What is the least number of pounds
the second pumpkin could weigh in order for
John to win the blue ribbon?
5. Ryan has a $16 gift card for a health store where
a smoothie costs $2.50 with tax. What are the
possible numbers of smoothies that Ryan can
buy?
7. A 15-foot tall cedar tree is growing at a rate of 2
feet per year beneath power lines that are 58
feet above the ground. The power company will
have to prune or remove the tree before it
reaches the lines. How many years can the
power company wait before taking action?
8. TO rent a certain vehicle, Rent-A-Ride charges
$55.00 per day with unlimited miles. The cost of
renting a similar vehicle at We Got Wheels is
$38.00 per day plus $0.20 per mile. For what
number of miles is the cost at Rent-A-Ride less
than the cost as We Got Wheels?
9. A particular type of contact lens can be worn up
to 30 days in a row. Alex has been wearing these
contact lenses for 21 days. How many more
days can Alex wear his contact lenses?
10. A pitcher holds 128 ounces of juice. What are
the possible numbers of 10-ounce servings that
one pitcher can fill?
23
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
11. A sales representative is given a choice of two
paycheck plans. One choice includes a monthly
base pay of 4300 plus 10% commission on his
sales. The second choice is a monthly salary of
$1200. For what amount of sales would the
representative make more money with the first
plan?
12. The average of Jim’s two test scores must be at
least 90 to make an A in the class. Jim got a 95
on his first test. What scores can Jim get on his
second test to make an A in the class?
13. A-Plus Advertising charges a fee of $24 plus
$0.10 per flyer to print and deliver flyers. Print
and More charges $0.25 per flyer. For how
many flyers is the cost at A-Plus Advertising less
than the cost at Print and More?
14. Jill has a $20 gift card to an art supply store
where 4ox tubes of paint are $4.30 each after
tax. What are the possible numbers of tubes that
Jill can buy?
15. One cell phone company offers a plan that costs
$29,99 and includes unlimited night and
weekend minutes. Another company offers a
plan that costs $19.99 and charges $0.35 per
minute during nights and weekends. For what
numbers of night and weekend minutes does
the second company’s plan cost more than the
first company’s plan?
16. Marcus has accepted a job selling cell phones.
He will be paid $1500 plus 15% of his sales each
month. He needs to earn at least $2430 to pay
his bills. For what amount of sales will Marcus
be able to pay his bills?
Extra Practice Unit 1
Solve each equation for the missing value; be sure to check your answer.
1. -4x + 7 = 11
3. 3m – 10 = 2(4m – 5)
5. -17 – 2x = 6 – x
2. x – (-3) = 12
4. 17 = 5y – 3
24
6. p – 5 = 12
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
7. 3(t – 1) = 9 + t
12. -13 = -h – 7
17. 2(𝑥 + 4) = 3(𝑥 − 2)
8. -4 = 2p + 10
13. 5 – x-2= 3 + 4x + 5
18. −2(x – 10) = 7
9. 3m + 4 = 1
14. −6 = 5 + 4
10. -2x = 16
11. 12.5 = 2g – 3.5
𝑦
7
1
20. 8 = 4(𝑞 − 2) + 4
2
21. −2h = 18
15. 9 = 2𝑛 + 9
4
1
19. 2 (𝑏 − 4) = -6
2
16. − 5 + 5 = 3
25
Algebra I
Unit 1
Answer the following question.
22. For her cellular phone service, Vera pays $32 a
month, plus $0.75 for each minute over the
allowed minutes in her plan. Vera recieved a
bill for $47 last month. Write and solve an
equation that shows how many minutes did she
use her phone beyond the allowed minute.
Solving Single-Variable Equations and inequalities
27. Justin and Tyson are beginning an exercise
program to train for football season. Justin weighs
150lb and hopes to gain 2lb per week. Tyson weighs
195 lb and hope to lose 1lb per week. If the plan
works, in how many weeks will the boys weigh the
same amount? What will that weight be?
23. Over 20 years, the population of a town
28. A full year membership to a gym costs $325
decreased by 275 people to a population of 850.
upfront with no monthly charges. A monthly
Write and solve an equation to find the original
membership cost $100 upfront and $30 per
population.
month. For what numbers of months is it less
expensive to have a monthly membership?
24. The Home Cleaning Company charges $312 to
power-wash the siding of a house plus $12 for
each window. Power Clean charges $36 per
29. Stephen belongs to a movie club in which he
window, and the price includes power-washing
pays an annual fee of $39.95 and then rents
the siding. How many windows must a house
DVDs for $0.99 each. In one year, Stephen spent
have to make the total cost from The Home
$55.79. Write and solve an equation to find how
Cleaning Company less expensive than Power
many DVDs he rented.
Clean?
25. 𝐸𝑎𝑟𝑡ℎ 𝑡𝑎𝑘𝑒𝑠 365 𝑑𝑎𝑦𝑠 𝑡𝑜 𝑜𝑟𝑏𝑖𝑡 𝑡ℎ𝑒 𝑆𝑢𝑛. Mars
30. Tom saved $550 to go on a school trip. The cost
takes 687 days to orbit the sun. Write and solve
for a hotel room, including tax, is $80 per nice.
an equation to find how many more days Mars
What are the possible nights Tom can stay at
takes than Earth to orbit the Sun.
the hotel?
26. Maggie’s brother is three years younger than
twice her age. The sum of their ages is 24. Write 31. Josh can bench press 220 pounds. He wants to
and solve an equation that shows how old
bench-press at least 25 pounds. Write and solve
Maggie is.
an inequality to determine how many more
pounds Josh must lift to reach his goal.
26
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
Solve each equation for the indicated variable.
32. ax + r = 7 (r)
34. 2a + 2b = c (b)
33. 5p + 9c = p (c)
36.
35. P = 4s (s)
Solve each inequality and graph the solution
38. 𝑎 − 3 ≥ 2
39. 3(x-5) >3x
𝑎
42. 2.5 > q – 0.8
2
44. 3𝑥 ≤ 5𝑥 + 8
41. -5 > -5 – 3w
45. 10 >
27
𝑗
= 𝑘 (𝑗)
37. 𝑏 = 𝑐 (𝑏)
43. 3 𝑘 > 6
40. 1.1 m < 1.21
ℎ−4
5−3𝑝
2
Algebra I
Unit 1
Solving Single-Variable Equations and inequalities
46. -45 + x < -30
51. 2v + 1 >2
47. -25 > 10p
1
1
3
3
52. 𝑟 + 4 ≤ 4
48. 2k + 7 > 2(k + 14)
53. 9𝑦 + 3 > 4𝑦 − 7
49. -18 > 33 – 3h
54. 4 ( 𝑥 + 3) > −24
50. 1.5x – 1.2 < 3.1x – 2.8
28