Abird flies from the bottom of a canyon that is 59 and three fifths

feet below sea level to a nest that is 609 and one fifth

feet above sea level. what is the difference in elevation between the bottom of the canyon and the bird's nest?

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?