Store A charges $10.00 for a pack of hotdogs and $8.00 for a pack of hotdog buns. Store B charges $11.00 for a pack of hotdogs and $7.50 for a pack of hotdog buns. Suppose you buy x packs of hotdogs and y packs of hotdog buns at both stores. You end up spending $80.00 at store A and $81.50 at store B. Which system of equations represents the total amount of money you spent on hotdogs and hotdog buns at each store? a.) 10x + 8y = 81.5 11x + 7.5y = 80 b.) 8x + 7.5y = 80 10x + 11y = 81.5 c.) 8x + 7.5y = 81.5 10x + 11y = 80 d.) 10x + 8y = 80 11x + 7.5y = 81.5