Problema Solution
In plan c the monthly cost is $30/month plus $0.30/min after the first 100 mins.you get 100 free day time minutes. Write an algebraic expression that represents the total monthly cost of plan c for more than 100 min
Answer provided by our tutors
let
x = the number of minutes
y = the total monthly cost
y = 30 + (x - 100)*0.30