Question

The function C(r) is the total cost, in dollars, of paying off a car loan borrowed at an interest rate of r% per year. What is the practical meaning of C′(5)?

A. The rate of change of the total cost of the car loan is C′(5).

B. If the interest rate increases by 1%, then the total cost of the loan increases by about C′(5).

C. If the interest rate increases by 1%, then the total cost of the loan increases by about C′(5) when the interest rate is 5%.

D. If the interest rate increases by 5%, then the total cost of the loan increases by about C′(5).

**i think it's A or D.. what do ya

Answer 1

i think A

Answer 2

oh okay, thank you!

Answer 3

np