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.
180.9 meters
B.
130.4 meters
C.
252.5 meters
D.
221.6 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.
Which way does the graph of
y
= –2
x
2
open?
A.
down
B.
right
C.
left
D.
up
Hint
4.
Which table shows a quadratic relationship?
A.
B.
C.
D.
Hint
5.
What is the reciprocal of
?
A.
B.
C.
D.
Hint
6.
Consider the equation
. What happens to the value of
y
when
x
is divided by 4?
A.
y
is added to 4
B.
y
is divided by 4
C.
y
is multiplied by 4
D.
y
is subtracted from 4
Hint
7.
What is true of the second differences for the equation
x
2
– 6
x
+ 12?
A.
they increase by 12
B.
they decrease by 1
C.
they are constant
D.
they increase by 1
Hint
8.
Consider the following conjecture. If an even number is written 2
k
, where
k
is a whole number, then 2
k
+ 1 must be an odd number. What can be your next course of action in dealing with this conjecture?
A.
test every possible case to prove the conjecture
B.
all answers are correct
C.
find a counterexample to disprove the conjecture
D.
develop an argument to prove the conjecture
Hint