For Diana, the following are the Observations of Total Operating Costs- with-Hours for July through November are: July $24,900 with 5,250 hours; August $24,000 with 5,500 hours; September $36,400 with 7,500 hours; October $44,160 with 9,750 hours; November $45,000 with 9,500 hours. What is the estimated total cost if the company expects to have an operating level of 8,000 hours used?

		$43,740
		$36,670
		$46,875
		$37,125