A cell phone company offers you a plan that charges a flat rate of $25 per month for 200 minutes of airtime. The rate of any time in excess of 200 minutes is $.12 per minute. A. Write an expression for the monthly dollar amount spent for the cell phone service if you want to use x minutes of airtime in excess of 200 minutes. B. Write an equation which indicates that you have budgeted no more than $40 per month to spend on the service. C. Determine the maximum number of minutes you can use in excess of 200 minutes so that you do not exceed your $40 per month budget.
A) Monthly Dollar Amount = $25+0.12x Solve the rest :)