1.
Find a solution to the equation using backtracking.
A.
s
= 18
B.
s
= 24
C.
s
= 15
D.
s
= 21
Hint
2.
Find a solution to the equation using backtracking.
A.
x
= 11
B.
x
= 9
C.
x
= 8
D.
x
= 10
Hint
3.
Find a solution to the equation using guess-check-and-improve.
–25 – 3
k
= –7 + 3
k
A.
k
= 4
B.
k
= 1
C.
k
= –3
D.
k
= –6
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
= 8
C.
y
= 9
D.
y
= –9
Hint