Center for Mathematical Professional Learning and Educational Technology

Carlos’ Cell Phone

Carlos’ Cell Phone

Grade: 3-12

Carlos is thinking of changing cell phone plans so he is comparing several different plans.

  • Plan 1) Pay as you go plan $0.99
  • Plan 2) Per minute $30 monthly fee plus $0.45
  • Plan 3) Per minute $40 monthly fee plus $0.35
  • Plan 4) Per minute $60 monthly fee plus $0.20
  • Plan 5) Per minute $100 monthly fee for unlimited minutes

What will Carlos need to consider to make his decision? How can Carlos figure out which plan is best for him?