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.
221.6 meters
B.
180.9 meters
C.
130.4 meters
D.
252.5 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.
Find the graph of
y
=
x
2
+ 1.
A.
B.
C.
D.
Hint
4.
Describe the location of the line of symmetry of the graph of
y
=
x
2
– 2.
A.
there is no line of symmetry
B.
the vertical axis
C.
the line
y = x
D.
the horizontal axis
Hint
5.
Consider the equation
xy
= 3. What happens to the value of
y
when
x
doubles?
A.
y
quarters
B.
y
halves
C.
y
triples
D.
y
doubles
Hint
6.
Find the equation of the following graph.
A.
y
=
B.
y
=
x
3
C.
y
=
x
2
D.
y
=
Hint
7.
What is true of the second differences for the equation
x
2
– 6
x
+ 12?
A.
they increase by 12
B.
they are constant
C.
they increase by 1
D.
they decrease by 1
Hint
8.
How many counterexamples are needed to prove a conjecture wrong?
A.
4
B.
1
C.
3
D.
2
Hint