The given equation represents the cost, y, of a medium pizza with x toppings at Charlie's pizza.
The equation is:
y = 12 + 2x
Let's break down the equation step by step:
1. The constant term, 12, represents the base cost of a medium cheese pizza without any additional toppings.
2. The coefficient of x, which is 2, represents the cost per additional topping. So, for each additional topping, the cost increases by $2.
To calculate the cost of a medium pizza with a specific number of toppings, substitute the value of x (the number of toppings) into the equation and solve for y (the total cost).
For example, if we want to find the cost of a medium pizza with 3 additional toppings, we substitute x = 3 into the equation:
y = 12 + 2(3)
y = 12 + 6
y = 18
So, the cost of a medium pizza with 3 additional toppings would be $18.
In summary, the equation y = 12 + 2x represents the cost of a medium pizza with x toppings, where 12 is the base cost and 2 represents the cost per additional topping. By substituting a value for x, you can find the total cost of the pizza.