EXAMPLE 6. A company makes a wine cooler with capacity of 24 bottles. Each wine cooler sells for $245. The monthly fixed costs incurred by the company are $393, 600, and the variable cost of producing each wine cooler is $85. (a) Find the Cost, Revenue and Profit functions. (b) What is the break-even point for this company? (c) How many coolers should be sold when the company breaks even? EXAMPLE 7. Mark manages a heaters store which has a monthly rent $900. If Mark needs to sell 45 heaters each month to break even and he sells the heaters for $30, what does Mark pay for each heater