1 point The amount A, in milligrams, of a 10-milligram
dose of a drug remaining in the body after t hours
is given by the formula A = 10(0.8)'. Find, to the
nearest tenth of an hour, how long it takes for
half of the drug dose to be left in the body.

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?