Suppose that for a company manufacturing calculators, the cost and revenue equations (in dollars) are given by 2132 2000 ' C = 80000 + 303:, R = 2002: where the production output in one week is m calculators. If the production rate is increasing at a rate of 600 calculators per week when the production output is 6000 calculators, nd each of the following with correct units. Round your answer to two decimal places if necessary. (Note: Prot is revenue minus costs.) The rate of change of the cost with respect to time is f, P V. The rate of change of the revenue with respect to time is f, P V. The rate of change of the prot with respect to time is i. ? V