Finding multiple costs.

Question

Below are the prices for two small pizzas from Domino's. Write an equation to calculate the cost of a small pizza based on the number of toppings you order. Complete sentences. Show work.

TABLE:

# of toppings: $9.50, $11.00

________________________________

Cost: 1, 3

A.) Bases of the information in the table, how much is Domino's charging for each topping?

B.) Write and equation in Point Slope form that represents this situation.

C.) Convert your equation into Slope Intercept Form.

D.) Based on this information, how much would a cheese pizza cost? (A pizza with 0 toppings.)

E.) How much would a small pizza with 5 toppings cost?

Answer 1

1 topping $9.50

3 toppings $11

cost of topping alone is (11-9.5)/(3-1) = 1.5/2 = $.75 = 75 cents

0 topping (cheese pizza) = $8.75

5 toppings cost = $11 + $1.50 = $12.50

C = .75T + 8.75

for T=5

C(5) = .75(5) + 8.75 =$12.50