1.
Evaluate
j
÷
k
if
j
= 45 and
k
= 9.
A.
405
B.
9
C.
45
D.
5
Hint
2.
Evaluate 3
x
+ 2
y
if
x
= 3 and
y
= 7.
A.
105
B.
27
C.
5
D.
23
Hint
3.
Evaluate
if
a
= 5,
b
= 6 and
c
= 3.
A.
B.
3
C.
10
D.
30
Hint
4.
Simplify the expression 5 · (15
a
).
A.
15
a
+ 5
B.
15
a
5
C.
75
a
D.
15
a
- 5
Hint
5.
Simplify the expression
b
+ 14
b
.
A.
14
b
2
B.
13
b
C.
14
b
D.
15
b
Hint
6.
Simplify 6
a
+ 15
a
.
A.
21
a
2
B.
42
a
C.
6
a
+ 15
a
D.
21
a
Hint
7.
Simplify 7
a
+ 3
a
.
A.
10
aa
B.
21
a
C.
10
a
D.
4
a
Hint
8.
Suppose that the base of a triangle is 3
x
y
and its height is also 3
x
y
. What is its area, expressed as a monomial?
A.
x
4
B.
C.
6
x
2
y
2
D.
Hint
9.
Evaluate
j
-
k
if
j
= 10 and
k
= 2.
A.
5
B.
20
C.
8
D.
12
Hint
10.
Simplify 14(2
x
).
A.
14 + 2
x
B.
14
x
2
C.
16
x
D.
28
x
Hint