2. The revenue function for a school group selling n bookmarks is given by R(n) = 2n, and the total cost function is given by C(n) = 144 + 0.80 Determine the number of bookmarks that need to be sold for the school group to break even.

At the Pizza Dude restaurant, a 12-in. pizza costs 5.40 to make, and the manager wants to make at least 4.80 from the sale of each pizza. If the pizza will be sold by the slice and each pizza is cut into 6 pieces, what is the minimum charge per slice?