please answer a, b, and c thank you!

Ed Solver Dog Food Company aishes to introduce a new brand of dog biscuits composed of chicken and liver. flacced biscuits that meet certain nutritional requirements. The lier-flavored biscuits contain 1 unit of catri- ent A and 2 units of Dutka B: the chickeo-flavored biscuits certain lunit of outrient Aad 4 units of nutrient B. According to federal requirements, there must be a las 40 units of ourriere A 34 60 unis nutriezt B in a package of the new mix. In addition, the company has decided that there can be no more than 15 liver- farere biscuits in a package. Ifit costs Ie to make I liver-flavored biscuit and 2 to make I chickes-flavored. har is he optimal prodex mit for a package of the biscuit to minimize the fina's cost? Formalate this as a linear programming problem. Solve this problem graphically, giving the optimal values of all variables. Wat is the total cost of a pediage of dog biscuit using the opumal mia? bi c)