Read the following problem

Assignment 2 (Application of The Derivative)  After an aggressive marketing campaign in the local community, Poe's TV Sales & Repair Co. discovered that their cost can now be modeled by the equation:  C(n) = 25n2 + 150n + 21500,  where n represents the number of small screen televisions produced in a particular month.  1. How many small screen televisions must be produced in a month in order to minimize the company's average cost? Show all steps and justify your answer. 

2. What is that minimum average cost?