1.
What is the solution of 2.5
a
+ 12 = 5
a
?
A.
30
B.
2.5
C.
24
D.
4.8
Hint
2.
Find a solution to the equation using guess-check-and-improve.
10
a
+ 4(
a
+ 1) = 32
A.
a
= 10
B.
a
= 4
C.
a
= 7
D.
a
= 2
Hint
3.
Nine more than a number is the same as 18 less than 4 times the same number. Write an equation that models this statement.
A.
y
– 9 = 18 – 4
y
B.
y
– 9 = 4
y
– 18
C.
y
+ 9 = 4
y
– 18
D.
y
+ 9 = 18 – 4
y
Hint
4.
Find how many blocks are in each bag to balance the scale.
A.
2
B.
1
C.
3
D.
4
Hint
5.
Find the balance puzzle that matches the equation.
3
n
+ 6 = 4
n
+ 9
A.
B.
C.
D.
Hint
6.
Which equation has a solution of
x
= –4?
A.
6
x
+ 17 = 1 – 10
x
B.
10
x
– 1.5 = –17.5 + 6
x
C.
1 – 10
x
= –17 + 6
x
D.
6
x
+ 17 = –1 + 10
x
Hint
7.
Evaluate the expression.
46 – (12.3 + 20.9)
A.
79.2
B.
12.8
C.
8.6
D.
54.6
Hint
8.
Simplify the expression.
w
–
z
(
x
+
y
)
A.
w
+
zx
+
zy
B.
w
–
zx
–
zy
C.
w
–
zx
–
y
D.
w
–
zx
+
zy
Hint
9.
What is the final answer to this
Think of a Number
trick?
Think of a number.
Subtract 6.
Multiply by –3.
Subtract 18.
A.
the answer is –1.5 times the number you started with
B.
the answer is –3 times the number you started with
C.
the answer is 1.5 times the number you started with
D.
the answer is 3 times the number you started with
Hint
10.
Find the linear equation.
A.
y
= 5.2(
x
– 6) – 2(4 – 3
x
)
B.
y
= 7
x
(
x
– 1) + 4(9.6 –
x
)
C.
y
= 10(
x
– 8) + 3
x
2
D.
y
=
x
+
x
2
– 7
x
+ 4.9
Hint