Question

Please help me with this. I want to get an A​

Answer 1

13: x=3

14: x=-4

15: x=-2

All I did was use an calculator to find out the missing variables or u could have just put all the answer chooses in it and see which one is right.

Answer 2

Question 1: x = 3

Question 2: x = -4

Question 3: x = -2