1.
Evaluate
if
a
= 9,
b
= 6 and
c
= 3.
A.
5
B.
15
C.
11
D.
9
Hint
2.
The equation
where
d
represents the distance in miles
and
t
is the number of seconds between seeing lightening and
hearing thunder, tells how far away a thunderstorm is.
How far is it to a thunderstorm if you count 15 seconds between
seeing the lightening and hearing the thunder?
A.
15 miles
B.
1 mile
C.
3 miles
D.
10 miles
Hint
3.
Evaluate
b
3
+ 6 if
b
= 2.
A.
14
B.
512
C.
15
D.
12
Hint
4.
Evaluate
x
+ 5
y
if
x
= 12 and
y
= 9.
A.
153
B.
71
C.
47
D.
57
Hint
5.
In physics, the number
measures the force of gravity between two objects when
a
and
b
each stand for the mass one of the objects and
d
stands for the distance between them. Find the force of gravity when
a
= 5,
b
= 8, and
d
= 2.
A.
20
B.
10
C.
5
D.
40
Hint