Question

What is the solution set for the given inequality if the replacement set for r is {5, 6, 7, 8, 9, 10}? 2r ≤ 3r – 8 A. {8, 9, 10} B. {9, 10} C. {5, 6} D. {5, 6, 7}

Answer 1

well if r=8
2(8)≤ 3(8)-8
16≤ 16

if r=9
2(9)≤3(9)-8
18≤ 19

if r=10
2(10)≤ 3(10)-8
20≤ 22