what is the equation? and graph your profit

Question

A case is of water is $15 and a bag of candy costs $10. You plan to sell the waters for $2 and the candy for $1. If you initially bought 3 cases of water and 2 bags of candy. write your equation.

Answer 1

You would need to know how many waters in a case, and candies in a bag. 

 

Your cost is 3*15 + 2 * 10 = 65, but your sales and profits cannot be determined without that information.