What is the solution set for the given inequality if the replacement set for r is {5, 6, 7, 8, 9, 10}? 3r ≤ 4r – 6 a. {6, 7, 8, 9,10} b. {7, 8, 9,10} c. {5} d. {5, 6}

Start with

Subtract from both sides:

Add 6 to both sides:

So, All numbers greater than or equal to 6 are ok: the solution is the first set:

answer: 0.26

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