3x-12≥15

2x-5≤9

5x+8≤53

3x-5≥16

Step-by-step explanation:

A) 3x-12≥15

3x ≥ 15 + 12

3x ≥ 27

or x≥ 9

B) 2x-5≤9

2x ≤ 9 + 5

2x ≤ 14

or x ≤ 7

C) 5x+8≤53

5x ≤ 53 - 8

5x ≤ 45

or x ≤ 9

D) 3x-5≥16

3x ≥ 16 + 5

3x ≥ 21

or x ≥ 7

Have a good day!