The selling price for a felt-tip pen is $2 per pen. Fixed cost of the operation is $45,000 per month and variable cost is 50 cents per pen. a. Find the break-even quantity. (Do not round intermediate calculations. Round the final answer to the nearest whole number.) Break-even quantity units per month b. How many pens must be sold to obtain a monthly profit of $20,000? (Do not round intermediate calculations. Round the final answer to the nearest whole number.) Quantity units per month c. What is the break-even point in sales dollars? (Do not round intermediate calculations. Round the final answer to the nearest whole number.) BEP$ per month d. Another type of marker with the following characteristics can also be produced by the machine: Selling price = $3 each, Variable cost = $0.65 each, and Proportion of revenue = 32%. Calculate the break-even point in sales dollars. (Do not round intermediate calculations. Round the final answer to 2 decimal places.) BEP$ per month