For Sunshine Motors, the weekly profit, in dollars, from selling x cars is P(x) = –.006x³ - .2x² + 950x − 240, and currently 60 cars are sold weekl a) What is the current weekly profit? b) What is the marginal profit? c) What is the marginal profit when x = 60? d) Use your answer from part c to estimate the weekly profit if sales increase to 61 cars weekly. Bonus: Use your answer from partc to estimate the weekly profit if sales increase to 63 cars weekly.

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