Kala purchased a prepaid phone card for $30. Long distance calls cost 12 cents a minute using this card. Kala used her card only once to make a long distance call. If the remaining credit on her card is $27.12, how many minutes did her call last?

Clarence wants to buy a new car. he finds an ad for a car that costs 27,200 dollars. suppose his local sales tax is 7%. -how much would he have to pay? -what is the cost of the car including tax? -if clarence has 29,864 saved, can he pay cash to buy the car?