# S.O.E. Phone Plans

Author:
Josh
Topic:
Equations
Create 2 equations that can be used to calculate the total price of the phone plan (y = cost of the phone + number of min * cost per minute) Use the sliders to model each equation. Your goal is to answer these questions: How many minutes do you need to use for both plans to cost the same? AND How much are both plans when they cost the same price? Phone plan A: Phone costs \$40 and the charge is \$2 per minute Phone plan B: Phone costs \$10 and the charge is \$3 per minute Phone plan C: Phone costs \$20 and the charge is \$2 per minute Phone plan D: Phone costs \$40 and the charge is \$1 per minute Phone plan E: Phone costs \$50 and the charge is \$0.50 per minute Phone plan F: Phone is free and the charge is \$3 per minute Phone plan G: Phone costs \$15 and the charge is \$4 per minute Phone plan H: Phone costs \$25 and the charge is \$4 per minute Phone plan I: Phone costs \$50 and the charge is \$3 per minute Phone plan J: Phone costs \$100 and the charge is \$3 per minute, and it comes with a \$50 off rebate!