1.
Find the solution of 4
x
+ 10 = 42
if the replacement set is {6, 7, 8, 9}.
A.
8
B.
6
C.
7
D.
9
Hint
2.
Find the solution of 2(
x
– 5) = 30
if the replacement set is {19, 20, 21, 22}.
A.
20
B.
19
C.
22
D.
21
Hint
3.
Find the solution of 2(
x
– 5) = 30
if the replacement set is {19, 20, 21, 22}.
A.
20
B.
22
C.
21
D.
19
Hint
4.
Solve
=
x
.
A.
x
= 5
B.
x
= 0
C.
x
= 10
D.
x
= 25
Hint
5.
Translate the sentence into an equation. Four times the number
n
is equal to twice the sum of
q
and
r
.
A.
4
n
= 2(
q
–
r
)
B.
4
n
= 2(
q
+
r
)
C.
4
n
=
q
+
r
D.
4
n
= 2
q
+
r
Hint