1.
Evaluate
if
a
= 5,
b
= 6 and
c
= 3.
A.
3
B.
30
C.
D.
10
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.
3 miles
B.
15 miles
C.
10 miles
D.
1 mile
Hint
3.
Evaluate 7 × (
a
- 4) if
a
= 9.
A.
59
B.
63
C.
35
D.
28
Hint
4.
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.
40
C.
10
D.
5
Hint
5.
Evaluate
j
-
k
if
j
= 10 and
k
= 2.
A.
12
B.
8
C.
20
D.
5
Hint