The cost, C, of renting a car for 'd' days is given by the equation C = 35d + 40. What does the value '40' represent in this equation?

✓ Correct Answer: Option A

In the linear equation C = 35d + 40, '35d' represents the cost based on the number of days ('d'), making $35 the daily rate. The '40' is an additive constant, representing a fixed or one-time fee regardless of the number of days.