5 (z–3) ≥5
Apply distributive property:
5(z)+5(-3) ≥ 5
5z-15 ≥ 5
Add 15 to both sides of the inequality:
5z-15+15≥ 5+15
5z ≥ 20
Divide both sides by 5
5z/5 ≥ 20/5
z≥ 4
graph:
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