1.
Identify the algebraic expression that does not represent the multiplication of 14 and the variable z.
A.
14 ×
z
B.
14
z
C.
14 +
z
D.
14
·
z
Hint
2.
Evaluate
j
÷
k
if
j
= 45 and
k
= 9.
A.
45
B.
405
C.
9
D.
5
Hint
3.
Evaluate 2
xy
+ 9 if
x
= 3 and
y
= 2.
A.
15
B.
12
C.
66
D.
21
Hint
4.
Write the prime factorization of 84 using exponents.
A.
2
3
× 3 × 7
B.
2
2
× 21
C.
2
2
× 3 × 7
D.
2
2
× 3
3
× 7
Hint
5.
How is the prime factorization of 120 written using exponents?
A.
2
3
× 3 × 5
B.
2
2
× 3 × 5
C.
3
4
× 5
D.
2
4
× 3 × 5
Hint