Jim gives the cashier a $20 bill at the pharmacy.


Write an equation that relates the change c he gets back in dollars to the cost b, in dollars, of his purchases. Which variable represents the independent variable? How much change does he get back if his purchases total $12.83?

Respuesta :

Answer:

b= 12.83

c= 7.17

Variable "c" is independent because it does not change. Jim receives $7.17 back.