14. Thomas counts the number of cars he sees in the parking lot of the school each hour of the
 day. He counted the following number of cars the first four hours of the day.
 .
 13
 12 cars the first hour
 .
 24 cars the second hour
 14
 .
 36 cars the third hour
 .
 48 cars the fourth hour
 15
 16
 What is true of the function Thomas wrote that represents the number of cars as a function
 of the number of hours, h? Select all that apply.
 a. The function is linear
 b. The function is exponential.
 c. The common ratio is 12
 d. The common difference is 12.