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Charies has deoded to opon a lawn-mowing company. To do so, he purchases mowing equipment for $6,000, buys gasolne ( $2.10 in gas is required lo mow each yard) and pays a helper $15. 00 per yard. Pnor to opening the lawn company. Chares eamed $7,000 as a Meguard at the nelghbomood swimming pool. Assume the money he used to purchase the mowing equipment could otherwise have eamed 4 percent per yoar in the bank and that the mowing equipment deprociates at 25 percent per year. Charles plans to mow 390 yards por year. What is Charles's itrpicit cost of production? Charles's implot cost of production is $ per year. (Enter your response as an integer)