Ben has a cellphone plan that provides 200 free minutes each month for a flat rate of $39

piecewise-function
cellphone-plan

#1

Ben has a cellphone plan that provides 200 free minutes each month for a flat rate of $39. For any minutes over 200 Ben is charged $0.35 per minute. Create a piecewise function that accurately represents Ben’s charges based on his cellphone plan.

Answer:

If you have to pay for something it’s not ‘free’!

ok so let y equal his bill and x the number of minutes …

(when x > 200) y = 39 + .35(x - 200)
(when x <= 200) y = 39