I need help with the following problem. Thank you!

A company manufactures 1 units of one item and 1; units of another. The total cost in dollars, C, of producing these two items is approximated by the tunction C2312+21y+2y2+T {a} If the production quota for the total number of items [both types combined} is 30, find the minimum production cost. cost = I:] {b} Estimate the additional production cost or savings if the production quota is raised to 31 or lowered to 29. production cost or savings = I:]