1.
Choose the correct graph of
y
= 12
x
– 3
x
A.
B.
C.
D.
Hint
2.
A ball is launched straight up from ground level modeling the equation
h
= 52
t
– 10
t
2, where
h
stands for height in meters and
t
stands for time. What is the approximate value of
t
when the ball hits the ground?
A.
6.0 seconds
B.
0 seconds
C.
5.2 seconds
D.
2.6 seconds
Hint
3.
A ball is launched straight up from ground level modeling the equation
h
= 52
t
– 10
t
2
, where
h
stands for height in meters and
t
stands for time. On its way up, it reached a particular height at 1 second. On its way down, it again reached the same height. At approximately what time did it reach that height the second time?
A.
2.0 seconds
B.
4.2 seconds
C.
5.2 seconds
D.
3.5 seconds
Hint
4.
Use you calculator's Table feature to approximate the solutions to the nearest hundredth.
x
(
x
– 7) = 36
A.
x
= 11.00,
x
= –2.01
B.
x
= 10.45,
x
= –3.45
C.
x
= 3.26,
x
= 6.31
D.
x
= –15.96,
x
= –1.15
Hint
5.
Toby needs to create a rectangular pen for his dog. He decides that the area of the pen will be 100 square feet with its length 2 feet longer than its width. What are the dimensions of Toby's pen approximated to the nearest hundredth?
A.
length 10.58 ft width 8.58 ft
B.
length 11.05 ft width 9.05 ft
C.
length 10.00 ft width 10.00 ft
D.
length 10.32 ft width 8.32 ft
Hint