Suppose that for a company manufacturing calculators, the cost, revenue, and profit equations are given by C = 80,000+ 20x, R=300x-x/20,P=R-Cwhere the production output in

Suppose that for a company manufacturing calculators, the cost, revenue, and profit equations are given by C = 80,000+ 20x, R=300x-x²/20,P=R-Cwhere the production output in 1 week is x calculators. If production is increasing at a rate of 500 calculators per week when production output is 6,000 calculators. Find the rate of increase (decrease) in cost,A) Costs are ___ at the rate of $_____ per week at this production level.(Simplify your answer.)B) Revenue is _______ at the rate of $ _______ per week at this production level.(Simplify your answer.)C) Profits are ___ at the rate of $ ___ per week at this production level.