1. George Duda runs a Sandwich shop. By studying data concerning his past cost, he has found that the cost of operating his shop is given by: C(x) = 2x² - 20x + 360, where C(x)is the daily cost in dollars to make x batches of sandwiches. a) b) find the number of batches George must sell to minimize the cost. what is the minimum cost? find a formula for the average daily cost per batch of sandwiches as a function of x. c) find the average daily cost per batch of sandwiches when 7 batches are produced.