John and 4 friends are going out for pizza for lunch. They split one pizza and 5 large drinks. The pizza cost $10.00. After using a $4.00 gift certificate, they spend a total of $13.50. Write an equation to model this situation, and find the cost of one large drink.

Respuesta :

10 + 5d = 13.50
5d = 13.50 - 10
5d = 3.50
d = 3.50/5
d = 0.7.......so one large drink (d) cost 70 cents