Liem orders a large pizza. The pizza store charges $11.00 for the pizza with cheese and $1.50 for each additional topping. The mathematical equation for the function is y=11+1.5x, with x representing the number of additional toppings and y representing the total price of the pizza. What is the cost of a large pizza with 3 toppings?

To find the cost of a large pizza with 3 toppings using the given equation, you would calculate as follows:

y = 11 + 1.5x

Here, x represents the number of additional toppings. Since Liem wants 3 toppings:

y = 11 + 1.5 * 3
y = 11 + 4.5
y = 15.5

So, the cost of a large pizza with 3 toppings is $15.50.