How did you answer Question 3?
x = -9
x = 9
x = -48
x = -60
I got a different answer.
How did you answer Question 8
x = 4
x = -4
x = -3
x = -5
How did you answer Question 12?
k = 1
k = 0
k = 18
k = 81
How did you answer Question 13?
r = 2
r = 4
r = 6
r = 8
How did you answer Question 18?
r = -18
r = -36
r = 18
r = 36