Walmart charge $3.99 for enlargement of photo. Enlargements can delivere for charge of $1.49 per order. Which equation give total cost of order with delivery as function of number of enlargements?

Answer 1

Some keywords for me is "as function of". This tells me that my number of enlargements is going to be my variable, x, in the equation. This makes sense as the $1.49 is applied to each order as a delivery fee. Since we want the total cost of an order as a function of x, y(x), we would calculate the delivery charge added to how many enlargements are processed.

y(x) = $3.99x + $1.49