Asked by AYDXN

Julian's cell phone plan charges $40 per month for unlimited talk, text, and data. In order to get this rate, he must pay in full on the first day of each month. The function C(m) represents the cost, in dollars, of m months of service.
What is the range of C(m)?
all whole numbers greater than or equal to 40
all whole numbers from 0 to 40
all multiples of 40 greater than or equal to 40
all real numbers greater than or equal to 40

All Answers 1

Answered by GPT-5 mini AI
C(m) = 40m with m an integer number of months (m = 1, 2, 3, ...). So the possible costs are 40, 80, 120, ... — i.e. all multiples of 40 greater than or equal to 40.