Joey has a collection of baseball cards that he has separated into two different value categories. his common cards are worth $0.75 each and his premium cards are worth $2.00 each. together, joey’s entire baseball card collection of 88 cards is worth $106.00. how many cards in joey’s collection are worth $0.75?

Your vet has placed your pet on a diet. the diet is to contain at least 12 mg of fat and at least 14 mg of protein per serving. these requirements are to be obtained from two food sources. source a contains 2 mg of fat and 2 mg of protein per serving. source b contains 1 mg of fat and 3 mg of protein per serving. if source a sells for $1.28 per serving and source b sells for $1.12 per serving, how many servings of each type should be purchased to satisfy the requirements at minimal cost?