Claudia has sold her car and received approval from the garage owner to re-lease her downtown re­served parking spot for the next four months so she can make some extra money. The rental fee is $200 per month, and she expects to charge $18 per day. Transportation in a car pool will cost her $6 per day. If there are a maximum of 20 work days per month for re-leasing the spot, determine the following:

a. Total cost and revenue relations

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b. Breakeven quantity per month

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c. Amount of money she will make (or lose) if the number of re-leased days per month over the four-month period are 18, 12, 17, and 20.