Acell phone company offers a basic monthly plan that charges $20 for the first 60 minutes and $0.05 per additional minute. if you budgeted $60 to spend on your cell phone bill for the month, how many minutes can you use? 860

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. 

Answer is either b or c