1.
Find a solution to the equation using backtracking.
A.
x
= 9
B.
x
= 10
C.
x
= 11
D.
x
= 8
Hint
2.
Find a solution to the equation using guess-check-and-improve.
10
a
+ 4(
a
+ 1) = 32
A.
a
= 2
B.
a
= 10
C.
a
= 7
D.
a
= 4
Hint
3.
Find a solution to the equation using guess-check-and-improve.
–25 – 3
k
= –7 + 3
k
A.
k
= –6
B.
k
= 4
C.
k
= –3
D.
k
= 1
Hint
4.
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 = 4
y
– 18
B.
y
– 9 = 18 – 4
y
C.
y
– 9 = 4
y
– 18
D.
y
+ 9 = 18 – 4
y
Hint
5.
Nine more than a number is the same as 18 less than 4 times the same number. What is the number?
A.
y
= 8
B.
y
= 9
C.
y
= –8
D.
y
= –9
Hint