1.
Consider a function machine that gives the positive square root of the input. If the input is
, what is the output?
A.
B.
C.
D.
Hint
2.
Find the domain of the function.
A.
all real numbers except 1
B.
all real numbers
C.
all real numbers except –1
D.
all real numbers except 0
Hint
3.
A flare is shot up into the sky modeling the formula h(t) = 2 + 144t – 16t
2
, where h is in feet and t is in seconds. Find the maximum height of the flare.
A.
300 ft
B.
350 ft
C.
326 ft
D.
320 feet
Hint
4.
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.
2.5 seconds
C.
5 seconds
D.
9 seconds
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