The cost C of producing x number of paperback books is given by C = 4.50x + 2400. Income R from these books is given by R = 7.50x. Find how many books should be produced and sold to break even.

A rectangular storage container with an open top is to have a volume of 14 cubic meters. The length of its base is twice the width. Material for the base costs 11 dollars per square meter. Material for the sides costs 5 dollars per square meter. Find the cost of materials for the cheapest such container. Total cost = (Round to the nearest penny and include monetary units. For example, if your answer is 1.095, enter $1.10 including the dollar sign and second decimal place.)

Lisa is assembling fruit baskets for a large corporate order. She starts with 66 pears and will put 5 pears in each fruit basket. Write an equation that shows how the number of pears remaining, y, depends on the number of fruit baskets Lisa assembles, x. y = %3D

The sum of money of Bill and Zan is 4,230. If 2/3 of Bill's money is equal to 5/6 of Zan's money, how much money does Bill have?