Question 21 Shannise Cole makes and sells cand. She has found that the cost per box for making x boxes or candy is given by the following cost Function. How many boxes should She make in order to keep the cost per box to a minimum? C ( x ) = x 2 - 60 * + 907 How many boxes should she make in order to keep the cost per box to a minimum? boxes. Question 13.) .P NOHESND Suppose the supply for a certain textbook is given by P = 1 2 79 and demand is given by p = - 29 + 9 - + 20 , where ( a ) How many books are demanded at a price a $10? (b) How many books are supplied at a price of $ 10? ( c) Graph the supply and demand functions on the same axes. ( u) How can the number books demand be found ? is