1.
How could you use the graph of
h
= 20
t
– 6
t
2
to estimate the solution(s) of 20
t
– 6
t
2
= 7, where
h
stands for height and
t
stands for time?
A.
Draw a vertical line at
t
= 20 and find where it intersects the curve.
B.
Draw a horizontal line at
h
= 20 and find where it intersects the curve.
C.
Draw a horizontal line at
h
= 7 and find where it intersects the curve.
D.
Draw a vertical line at
t
= 7 and find where it intersects the curve.
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.
0 seconds
B.
5.2 seconds
C.
6.0 seconds
D.
2.6 seconds
Hint
3.
How many solutions can a graph of
y
=
a
x
2
+
b
x
+
c
have?
A.
two
B.
all answers are correct
C.
zero
D.
one
Hint
4.
Use you calculator's Table feature to approximate the solutions to the nearest hundredth.
4
x
(
x
+ 2) = 12
A.
x
= 0,
x
= –4
B.
x
= 2,
x
= –2
C.
x
= 1,
x
= –3
D.
x
= –1,
x
= –4
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 10.00 ft width 10.00 ft
B.
length 11.05 ft width 9.05 ft
C.
length 10.32 ft width 8.32 ft
D.
length 10.58 ft width 8.58 ft
Hint