Suppose a person wants to travel D miles at a constant speed of (10+x) mi/hr, where x could be positive or negative. The time in minutes required to travel D miles is Tx)=60D(10 +x) Show that the linear approximation to T at the point x-0 is T(x) L(x) = 3D Recall that the linear approximation L(x) is equal to T(a) + T'(a)(x-a). Find T'(x). T'X)-

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