1.
Copy and complete the function table to find the function values of
{-1, 7} for
f
(
n
) = 2
n
- 1.
A.
f
(-1) = -3,
f
(7) = 16
B.
f
(-1) = 1,
f
(7) = 13
C.
f
(-1) = -3,
f
(7) = 15
D.
f
(-1) = -3,
f
(7) = 13
Hint
2.
If
n
is the number of seconds between the lightning and the thunder
and
f
(
n
) is the number of feet between you and the lightning, then
f
(
n
) = 1100
n
. If
n
is 7, find
f
(
n
).
A.
8800 feet
B.
9000 feet
C.
157.1 feet
D.
7700 feet
Hint
3.
Many children grow at a predictable rate. The function
f
(
n
) = 2.65
n
+ 28.9 can be used to estimate the height in inches for a boy who is
n
years old. The function is accurate until about age 13. Complete the function table.
A.
B.
C.
D.
Hint
4.
A hotdog vendor's profit P for each hotdog sold
h
is modeled by the function
P
= 1.75
h
. What would be the hotdog vendor's profit if he sold 125 hotdogs?
A.
$126.75
B.
$225.00
C.
$218.75
D.
$142.50
Hint
5.
A taxi costs $5 plus $8 for each mile. Which function relates the cost
c
of a taxi ride to the distance
d
traveled?
A.
d
= 8
c
+ 5
B.
c
= 5
d
+ 8
C.
c
= 8
d
+ 5
D.
d
= 5c + 8
Hint