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OpenStudy (anonymous):

The base of a triangle is decreasing at the rate of 1 ft/sec, while the height is increasing at the rate of 2 ft/sec. At what rate is the area of the triangle changing when the base is 10 ft and the height is 70 ft? Remember to use the product rule when you find the expression for dA/dt. a. -25ft^2/sec b.-45ft^2/sec c.-50ft^2/sec d.45ft^2/sec

OpenStudy (anonymous):

Use differentials to solve it

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