Answer:Middle Answer.Step-by-step explanation:Given that Micah intends to spend less than $150 on paint and brushesHence Cost of brushes+ cost of paint ≤ 150150 ≥ Cost of brushes+ cost of paint 150 ≥ Cost of brushes+ (price of paint per gal) · (number of gallons)Given that he buys x gal of paint, For middle answer:150 ≥ 42.21 + 21.64x (which matches the inequality in the question, so this is the right answer)