One cell phone plan charges a flat monthly rate of $34.95 with extra charges of $0.35 per minute for each minute after the first 4000 minutes and $0.10 per text message after the first 100 text messages.

a. Choose letters to represent the variables.

b. Write a formula to express the cell phone charges as a function of the number of minutes used (assume that the number is at least 4000) and the number of text messages (assume that the number is at least 100).

c. What are your cell phone charges if you use 6000 minutes and 450 text messages?

d. Write a formula to express the cell phone charges, this time assuming that the minutes are at least 4000, but the number of text messages is less than 100.

e. What are your cell phone charges if you use 4200 minutes and 88 text messages?

Answer rating: 100% (QA)

a Given data Flat monthly rate is 3495 Charge per text message aft... View the full answer