Suppose u and v are differentiable functions of x. Use the given values of the functions and their derivatives to find the value of the indicated derivative. 15) u(2) = 10, u '(2) = 3, v(2) = -1, v '(2) = -4. 15) d dy (2u - 4v) at x = 2 A) 24 B) -10 C) 16 D) 22