1.
If
f
(
n
) = -6
n
+ 2, find
f
.
A.
9
B.
8
C.
-3
D.
4
Hint
2.
Triple the number, subtract 5, and square the result.Which function describes the rule?
A.
y
= 3
x
2
– 5
B.
y
= 3(
x
– 5)
2
C.
y
= (3
x
– 5)
2
D.
Hint
3.
Find the domain of the function.
A.
all real numbers except 0
B.
all real numbers
C.
all real numbers except –1
D.
all real numbers except 1
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.
l
+
w
= 50
B.
w
= 50 –
w
C.
lw
= 50
D.
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.
lw
= 50
B.
l
= 50 –
w
C.
D.
l
+
w
= 50
Hint