1.
What is the solution of 4.1 + 2
p
= 6.5?
A.
8.9
B.
6.5
C.
1.2
D.
2.4
Hint
2.
Find a solution to the equation using backtracking.
8
b
– 5 = 19
A.
b
= 2
B.
b
= –3
C.
b
= 3
D.
b
= –2
Hint
3.
Find a solution to the equation using guess-check-and-improve.
10
a
+ 4(
a
+ 1) = 32
A.
a
= 7
B.
a
= 2
C.
a
= 10
D.
a
= 4
Hint
4.
Find how many blocks are in each bag to balance the scale.
A.
B.
C.
D.
Hint
5.
Solve this equation by imagining a balance puzzle.6
n
+ 14 = 10
n
+ 6
A.
n
= 4
B.
n
= 3
C.
n
= 1
D.
n
= 2
Hint
6.
Solve the equation for
r
.
7
r
+ 6 = 4
r
– 9
A.
r
= 6
B.
r
= 2
C.
r
= –3
D.
r
= –5
Hint
7.
Diana needed to borrow some money from her friends Zach and Kenyon. She told them that if it took more than 2 days to pay them back, she would triple the amount they borrowed her. Diana got a check for $60 and was able to pay them back, but it was three days later. Which expression represents the amount of money Diana had after paying her friends back?
A.
60 – 3
x
+
y
B.
60 – 3(
x
+
y
)
C.
60 –
x
+
y
D.
60 – (
x
+
y
)
Hint
8.
Simplify the expression.6
e
– 2(10
e
– 1)
A.
1 – 14
e
B.
2 – 14
e
C.
–12
e
D.
–6
e
+ 2
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 –3 times the number you started with
B.
the answer is 1.5 times the number you started with
C.
the answer is 3 times the number you started with
D.
the answer is –1.5 times the number you started with
Hint
10.
What is the final answer to this
Think of a Number
trick?
Think of a number.
Multiply by 4.
Subtract 8.
Divide by 2.
Add 4.
A.
the answer is 2 less than the number you started with
B.
the answer is –2 times the number you started with
C.
the answer is 2 times the number you started with
D.
the answer is 2 more than the number you started with
Hint