Question

At Joe's pizzeria a pizza costs $5 with the first topping, and then an additional 75 cents for each additional topping.

If x represents the number of toppings on a pizza, what function represents the cost of a pizza with at least one topping? Illustrate the graph for the function.

Answer 1

Let x be the number of toppings. The price of the first topping is included in $5. So the total cost will be y = $5 + $0.75*(x-1) = $0.75x + $4.25. This is an equation of a straight line.