If a inmate call is 10 cent a minute for thirty minutes how much is the call

Question

If a inmate call us 10 cent a minute for 30 minutes how much will the call be 

Answer 1

1 minute  cost 10 cents

2 minutes cost 20 cents

3 minutes cost 30 cents...

 

multiply the minutes by the cost     30 x 10 = 300 cents or $3