Arestaurant offers delivery for their pizzas. the total cost is a delivery fee added to the price of the pizzas. one customer pay $25 to have 2 pizzas delivered. another customer pays $58 for 5 pizzas. how many pizzas are delivered to a customer who pays $80?

Answer

Find out the how many pizzas are delivered to a customer who pays $80 .

To prove

As given

A restaurant offers delivery for their pizzas.

The total cost is a delivery fee added to the price of the pizzas.

One customer pay $25 to have 2 pizzas delivered.

Another customer pays $58 for 5 pizzas.

Thus by using the slope formula

Putting the value in the formula

Simplify the above

This represented one pizza cost is $11.

Thus 2 pizza cost = $11 × 2

                              = $22

Thus

Delivery price = Total cost of 2 pizza including delivery fee - Cost of 2 pizza

                       = $25 - $22

                      = $3

Thus 5 pizza cost = $11 × 5

                              = $55

Thus

Delivery price = Total cost of 5 pizza including delivery fee - Cost of 5 pizza

                       = $58 - $55

                      = $3

Therefore the delivery charge is $3.

Now calculate the number of pizza for the customer who pays $80.

Cost of the pizza = Total cost of the pizza including delivery charges - Delivery charges

                            = $80 - $3

                           = $ 77

Let us assume that the number of pizza for the customer who pays $80 = x

Cost of one pizza = $11

Than the equation becomes

11 × x = 77

x = 7

Therefore the number of pizza are 7 delivered to a customer who pays $80 .

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3