Question

What is the solution set for the given inequality if the replacement set for r is {5, 6, 7, 8, 9, 10}? 5r ≤ 6r – 8

Answer 1

5r < = 6r - 8
subtract 6r from both sides
-r < = -8
divide both sides by -1, when you divide by a negative switch the inequality sign
r > = 8
Solution Set { 8, 9, 10}