A cell phone company offers a basic monthly plan that charges $20 for the first 60 minutes and $0.05 per additional minute. Now, you budgeted $60 to spendon your cell phone bill for the month. Let's find out how many minutes can you use? => 20 dollars + 0.05 (n), where n is the number of minutes. => 60 dollars - 20 dollars = 40 dollars => 40 dollars / 0.05 = 800 minutes => 20 dollars + 0.05(800) = => 20 + 40 = 60 dollars = 60 minutes + 800 minutes = 860 minutes.
