1.
Evaluate
if
a
= 9,
b
= 6 and
c
= 3.
A.
9
B.
5
C.
15
D.
11
Hint
2.
Evaluate 7 × (
a
- 4) if
a
= 9.
A.
35
B.
63
C.
28
D.
59
Hint
3.
Evaluate
a
b
+ 8 if
a
= 4 and
b
= 7
A.
60
B.
55
C.
28
D.
36
Hint
4.
Evaluate 5
k
+
if
k
= 3,
m
= 20, and
n
. = 5.
A.
20
B.
57
C.
7
D.
19
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.
10
B.
20
C.
40
D.
5
Hint