1.
If a rocket is fired from the ground with an initial velocity of 75 meters per second, then the height of the rocket after
t
seconds is
h
= 75
t
- 4.9
t
2
. Find the height of the rocket after 3 seconds.
A.
252.5 meters
B.
180.9 meters
C.
221.6 meters
D.
130.4 meters
Hint
2.
What is the equation of the graph shown?
A.
f
(
x
) = -2
x
2
+ 2
x
+ 1
B.
f
(
x
) = 2
x
2
+ 2
x
+ 1
C.
f
(
x
) = 2
x
2
- 2
x
+ 1
D.
f
(
x
) = -2
x
2
+ 2
x
- 1
Hint
3.
Describe how the graph of
y
= (
x
+ 1)
2
differs from the graph of
y
=
x
2
.
A.
the graph of
y
= (
x
+ 1)
2
moved down 1 unit
B.
the graph of
y
= (
x
+1)
2
moved 1 unit to the right
C.
the graph of
y
= (
x
+ 1)
2
moved up 1 unit
D.
the graph of
y
= (
x
+ 1)
2
moved 1 unit to the left
Hint
4.
Two friends are playing catch with a baseball. The ball's flight can be modeled by the equation
y
= 1 + 0.6
x
– 0.08
x
2
, in meters. What is the height of the ball at its highest point?
A.
18.8 m
B.
1 m
C.
2.13 m
D.
3.78 m
Hint
5.
Find the cubic equation.
A.
y
= 5
x
3
+ 2
x
B.
y
= 3
x
C.
y
=
x
2
+ 5
D.
y
=
x
(
x
3
+ 1)
Hint