Question

4d +5≥ 13 or 7d-2 <12

Answer 1

4d +5≥ 13

4d ≥ 13 -5 move the constant to the right and changed its signs
4d ≥ 8 subtract the numbers
d ≥ 2 divide both side of the inequality by 4
Answer d ≥ 2

Answer 2

4d + 5 ≥ 13

Explanation:

1. 4d + 5 ≥ 13

-5 -5

4d ≥ 8

4d/4 = d

8/4 = 2

d=2

4x2+5 =13

13≥13

2. 7d - 2 < 12

+2 +2

7d < 14

7d/7= d

14/7 = 2

d=2

7x2-2 = 12

12<12