Question

A concession stand charges $1.50 per soda and $2.00 per pretzel. Write an expression for the amount of money you would need to buy x sodas and y pretzels

Answer 1

C(x,y)=3x/2 + 2y

Answer 2

C(x,y) is the cost as a function of both x and y. As a matter of formality, we might establish the domain by saying that both x and y are non negative integers.