Adelicatessen offers 4 different breads, 4 cheeses, and 6 different meats. in how many ways can a sandwich be made with 1 bread, 2 cheese and 3 meats? 360 420 480 540

Just tell me how to set up the equation.

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

Aconstruction worker needs to put a rectangular window in the side of a building he knows from measuring that the top and bottom of the window have a width of 8bfeet and the sides have a length of 15 feet he also measured one diagonal to be 17 feet what is the length of the other diagonal