5. A bug crawls on the surface z = x - y directly above a path...

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5. A bug crawls on the surface z = x² - y² directly above a path in the xy-plane given by x = f(t) and y = g(t). If f(2)= 4, f'(2) = -1, g(2) = -2, and g'(2) = -3, then at what rate is the bug's elevation z changing when t = 2? 5. A bug crawls on the surface z = x² - y² directly above a path in the xy-plane given by x = f(t) and y = g(t). If f(2)= 4, f'(2) = -1, g(2) = -2, and g'(2) = -3, then at what rate is the bug's elevation z changing when t = 2?