Set 3: Linear Inequalities

Choice A is correct. Choice A is the correct answer. Calculate fixed costs first. 1. Fixed Cost: 3 days $\times$ $30/day = $902. Variable Cost: \0.15 per mile (0.15 m$$) 3. Total Cost: $$90+ 0.15 m$$ 4. Inequality: $$90+ 0.15 m \leq 150$$ 5. Subtract 90: $$0.15m \leq 60$$ 6. Divide by 0.15: m \leq 400$ Strategic Tip: $60\div 0.15 = 6000 \div 15 = 400$. Choice B is incorrect because it might result from dividing 120 by 0.15 (forgetting the 3-day cost). Choice C is incorrect because it might result from dividing 30 by 0.15. Choice D is incorrect because it might result from dividing 90 by 0.15.