Question

Sheila is ordering pizzas for a party. each plain pizza costs $9.00, and each topping costs $1.50. the delivery charge is $3.00. write a function rule to show the total cost of the pizzas if the pizza ordered has 2 toppings. how much will 5 pizzas cost?

Answer 1

f (x) = $12.00 * x + $3.00

f (5) = $12.00 * 5 + $3.00
f (5) = $63.00

Answer 2

Answer:
`c=12x+3`, where c is the total cost of x pizzas.

The cost of 5 pizzas = $63

Explanation:

Given : Cost of each pizza = $9.00

Cost of each topping = $1.50

⇒ Cost of 2 toppings = 2 x $1.50 = $3.00

Then, the cost of each pizza having 2 toppings = $9.00+ $3.00= $12.00

Let x be the number of pizzas .

Then , the cost of x pizzas = 12x

Since , Delivery charge = $3.00

Then, the total cost of ordering x pizzas( in dollars) = Cost of x pizzas+ Delivery charge = 12x+3

Function rule to show the total cost of the pizzas if the pizza ordered has 2 toppings :
`c=12x+3` , where c is the total cost.

Put x= 5

`c=12(5)+3=60+3=63`

Hence, the cost of 5 pizzas = $63