1.
If
f
(
n
) = -6
n
+ 2, find
f
.
A.
4
B.
9
C.
8
D.
-3
Hint
2.
Find the domain of the function.
A.
all real numbers except 1
B.
all real numbers except –1
C.
all real numbers except 0
D.
all real numbers
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.
5 seconds
B.
2.5 seconds
C.
4.5 seconds
D.
9 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.
w
= 50 –
w
B.
C.
l
+
w
= 50
D.
lw
= 50
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.
l
+
w
= 50
B.
C.
l
= 50 –
w
D.
lw
= 50
Hint