Question

Katie is moving to a new house. Small boxes hold 15 pounds each and medium boxes hold 25 pounds each. Write an expression for the total weight in the moving van if Katie uses "s" small boxes and "m" medium boxes

Answer 1

s applies to the 15 pounds while m applies to the 25 pounds. Since you don't know how many pounds of each you would take 15 times s and add it to 25 times m. So the expression would be 15s + 25m