Find the rate of change of total revenue, cost, and profit with respect to time. Assume that R(x) and C(x) are in dollars. dx R(x) = 50x-0.5x², C(x) = 3x + 5, when x=25 and = 15 units per day dt The rate of change of total revenue is $ The rate of change of total cost is $ The rate of change of total profit is $ per day. per day. per day.

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