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) 600(10+x)-1 Show that the...

Extracted text: 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) 600(10+x)-1 Show that the linear approximation to T at the point x 0 is T(x) L(x)= 3D 2- Recall that the linear approximation L(x) is equal to T(a)+ T'(a)(x-a). Find T'(x). T'(X)=