A linear function models the total cost, C(d), of a taxi ride for a distance d miles, where C(d) = 2.50d + 3. What is the total cost for a 10-mile ride, and how much more would a 15-mile ride cost compared to a 10-mile ride?
✓ Correct Answer: Option A
C(10) = 2.50(10) + 3 = $28. C(15) = 2.50(15) + 3 = $40.50. The difference is $40.50 - $28 = $12.50.