Download Name________________________________ Block ______ Date

Name________________________________ Block ___________
Date 2-7-12
Warm up-- Write the ordered pair for each point shown and circle the
Quadrant number that it is in.
A. ________ 1 2 3 4
B __________1 2 3 4
C __________1 2 3 4
D ________ 1 2 3 4
E __________ 1 2 3 4
F __________ 1 2 3 4
G. ________ 1 2 3 4
H __________ 1 2 3 4
I __________ 1 2 3 4
Practice A. Relation – is a set of ordered pairs—write the relation as a table, graph and mapping:
Ordered pairs
table
Graphing
{(1, 1), (0, 2), (3, -2)}
*set brackets
mapping
x
*each x and y listed
next to each other
ea ordered pair
plotted as a pt
y
each x and y written only one
time and connect with line
Domain _______________________________________________________________________________
Range _______________________________________________________________________________
Growth formula _____________________________ Decay Formula________________________________
Used when a quantity is increased by a percent
Used when a quantity is decreased by a percent
A is the ending amount, C is starting amount, r is the rate of increase or decrease as a decimal(divide % by 100)
Practice B – Use the growth or decay formula to find the new amounts
1. The average rent in Mecklenburg county in
2011 was $858. The next year it was expected to
go up by 10.5%. What would the new average rent
be?
2. Mr. Bates income for last year was $45,000.
This year his income was $47,500. By what
percent did it increase?
3. Patriot and Giant jerseys normally sell for $80.
It is projected that after the super bowl the winning
team’s jersey will sell for 20% more and the losing
team will sell for 20% less. What will the new
prices be?
4. Albert started his diet and weighed 200
pounds. Three months later he weighs 180
pounds. By what percent did his weight go down?
Practice C – Write the equation and then solve
1. Alex can run 3 mile in 22 minutes, assuming he
can maintain this speed, how are could he run in 36
minutes? Round to the nearest tenth.
2. Alex and 3 of his friends all go to Carowinds.
It costs $15 to park and they each need to buy a
ticket. If the total cost was $158.96, how much
does each ticket cost?
Equation:
Equation:
3. Josh’s paycheck is $345 when he works 40
hours, how much could he expect to earn if he only
worked 30?
4. Josh and his girl friend went to the beach and
rented a bicycle built for 2, for the day. The
charged him $7.50 per hour. If the bill was
$26.25, how many hours did they ride?
Equation:
Equation:
Practice D – Simplify:
1. -3(4x – 2) + 3x
2.
32 g  64
8
Practice E – Solve:
1. 3x – 4 < 2 or x + 2  8
4. 8(h + 3) = 7(h – 3)
14. k  2  3
4
2(5a + 6) = -(3a + 8)
8. –8x – (3x + 6) = 4 – x
11.
– 3 = – 23 + 4x
15. x  3  4  2
5
4. 5(x – 4y) – 3(x – 2y)+ 2y
3. f + 8  1 or
20 > 3x – 4 > 2
5.
7. 3w – 6 – 2w = –6 + w
10. 5x – 4 = 16
2.
3. x – 5(-4x – 7)
6.
2h2  2
5
–4(2f – 4) = –2(–f + 2)
9. 4(6m + 4) = 8(3m + 8)
12. -6y – 3 = 27
16.
f + 9 > -4
13. 33 = 5 – 7z
17. 3 x  3  4  2
6