URGENT

A company has two factories. One factory has the cost function ci(yi) = 2y +90 and the other has the cost function cz(y)=6y2 + 40. a) Calculate the marginal cost of both factories. b) (.) If the company wishes to produce a total of 32 units as cheaply as possible, how many units will be produced in each factory? c) Now suppose that the company starts to operate a third factory. The marginal cost function of the third factory is given by MC(y)=5ys. Calculate the variable cost of producing 10 units at the third factory