Mr. and mrs. smith's children all play different sports. they want to buy a combination training sets, which each cost $149, volleyball training set, which each cost $127, and fo training sets which each cost $275. let s represent number of soccer sets, v represent volleyball sets and f represent the number of football sets. which expression represents amount of money the smiths will spend, before sales tax, based on the number of sport buy? let s represent number of soccer sets, v represent