Download 7A10

7A10
Mr. Patel filled a swimming pool with water. When he started, the pool already
contained 1,500 gallons of water. The table below shows the number of gallons
of water in the pool after filling it for h hours.
FILLING THE POOL
Gallons of Water
in Pool (g)
Number of
Hours (h)
1,500
0
1
2
3
4
2,100
2,700
3,300
3,900
Which equation can be used to determine the number of gallons, g, of water in the
pool after h hours?
F g = 600h
G g = 1,500h
H g = 1,500 + 600h
J g = 1,500h + 600
The table below shows a relationship between x and y.
x
y
2
6
5
9
6
10
9
13
Which equation shows the relationship between x and y?
A
B
C
D
y = 3x
x = 3y
y=x+4
x=y+4
Complete the function table below with the missing values for y.
x
1
y
3
2
3
7
11
4
5
15
6
Based on the function table, write a function rule that shows the relationship between x and y.
Answer _______________________________________
Carlotta conducted an experiment on the growth rate of bacteria. The table below
shows her results.
GROWTH RATE
OF BACTERIA
Number of
Hours (h)
Number of
Bacteria (b)
0
1
2
3
20
56
92
128
Write a function rule for the number of bacteria, b, after h hours.
Answer _____________________________
What will the number of bacteria be after 5 hours?
Show your work.
Answer_____________ bacteria
The function table below follows a function rule.
x
0.5
1
2
4
5
10
y
2
1
0.5
0.25
Part A
Complete the table by filling in the missing numbers.
Part B
Based on the table, write a function rule that represents the relationship between x
and y.
Rule __________________________________
Luisa works in her grandfather’s jewelry shop. She deposits her earnings in a savings
account. Her savings account balances for five of the last six weeks are shown in the
function table below.
LUISA’S SAVINGS ACCOUNT
Week Savings Balance
(w)
(b)
1
$510
2
$620
3
$730
4
$840
5
?
6
$1,060
Part A
According to the data in the function table, write a function rule that shows how
much money Luisa saves each week.
Rule ___________________________________________
Part B
Based on the table, how much money is in Luisa’s savings account in week 5?
Answer $______________________
The table below shows a relationship between x and y.
x
2
4
6
8
10
Y
8
10
12
14
16
What equation represents the relationship between x and y?
A
B
C
D
y = 2x
y = 4x
y=x+6
y = 2x + 2
The table below shows the number of chaperones, y, needed for a certain number of
students, x, at a school dance.
SCHOOL DANCE
Number of
32 48 64
Students (x)
Number of
3 6 8
Chaperones (y)
96
12
Write an equation that represents the relationship between the number of chaperones
needed and the number of students attending a dance.
Equation ________________________________
How many chaperones will be needed for a dance that has 240 students?
Answer __________________chaperones
The table below shows Jeffrey’s bank account balance for the past six weeks.
JEFFREY’S
BANK ACCOUNT
Week Balance
(w)
(b)
1
$10
2
$24
3
$38
4
$52
5
$66
6
$80
Part A
Using information from the table, write an equation that represents the balance, b,
in Jeffrey’s bank account as a function of the number of weeks, w.
Answer___________________________
Part B
Use your equation or the information in the table to find what Jeffrey’s bank
account balance will be in Week 8.
Answer $_____________________