Sid has decided to leave his $70,000-a-year landscape design job and open a new kayak business. his insurance cost is expected to be $2,000 per year. the kayaks he owns are valued at $25,000, but he experiences 10% annual depreciation on them. he will also use building space that he owns, but, to do so, he must give up the $10,000 per year in rent he used to receive for the space. revenue is expected to equal $100,000 per year. sid's economic profit is: