1.
If
f
(
n
) = -6
n
+ 2, find
f
.
A.
4
B.
9
C.
-3
D.
8
Hint
2.
Triple the number, subtract 5, and square the result.Which function describes the rule?
A.
y
= 3
x
2
– 5
B.
C.
y
= 3(
x
– 5)
2
D.
y
= (3
x
– 5)
2
Hint
3.
A flare is shot up into the sky modeling the formula
h
(
t
) = 2 + 144
t
– 16
t
2
, where h is in feet and t is in seconds. About how long was the flare in the air?
A.
4.5 seconds
B.
5 seconds
C.
9 seconds
D.
2.5 seconds
Hint
4.
Hector needs to build a rectangular pen for his dog. He decides to use an area of 50 m
2
in his backyard for the pen. Using l for the length and w for the width, express the area in terms of the two variables.
A.
B.
lw
= 50
C.
l
+
w
= 50
D.
w
= 50 –
w
Hint
5.
Hector needs to build a rectangular pen for his dog. He decides to use an area of 50 m
2
in his backyard for the pen. Using
w
for the width, find a function
f
(
w
) that represents the perimeter of the fence in terms of
w
.
A.
B.
l
= 50 –
w
C.
lw
= 50
D.
l
+
w
= 50
Hint