The price of a pizza is $4.99 plus an additional $0.95 for each topping
Function `f` gives the price as a function of the number of toppings.
The function `f` can be defined as follows:
f(x) = 4.99 + (0.95 * x)
Where x is the number of toppings and f(x) is the total price of the pizza with x toppings.