Marly has to get some cavities filled at the dentist. The dentist charges a fee of $35 plus $43 per cavity. If Marly ends up having a bill of $164, how many cavities did Marly have filled?

a 1
b 2
c 3
d 4

Respuesta :

the answer is 3 because 164 minus 35 is 129 and that divide by 43 is 3 

3 cavities she did have ^~^ an apple a day keep the doctor away.