1.
Solve 3
x
= 18.
A.
6
B.
21
C.
15
D.
7
Hint
2.
The number sentence below is false. Make the sentence true by changing one symbol or number. Find the correct number sentence.
5
2
– 21 = 5 × 4 + 8
A.
5
2
– 21 < 5 × 4 + 8
B.
6
2
– 21 = 5 × 4 + 8
C.
5
2
– 21 = 5 × 5 + 8
D.
5
2
– 21 > 5 × 4 + 8
Hint
3.
The rule for the flowchart below is
r
= 10
s
+ 6. Use the flowchart to find the value of
r
when the value of
s
is
.
A.
B.
7
C.
D.
Hint
4.
Use the flowchart to backtrack and find the solution.
A.
3
B.
213
C.
D.
4
Hint
5.
Find a solution to the equation using guess-check-and-improve. Give the solution to the nearest tenth.
8
p
– 22 = 30
A.
p
= 6.0
B.
p
= 11.6
C.
p
= 6.4
D.
p
= 6.5
Hint
6.
Find a solution to the equation using guess-check-and-improve. Give the solution to the nearest tenth.
k
· (18 +
k
) = 67.84
A.
k
= 9.8
B.
k
= 13.2
C.
k
= 3.2
D.
k
= 13.5
Hint