Mathematics, 14.02.2020 04:13, AdamWitt

A slow freight train chugs along a straight track. The distance it has traveled after x hours is given by a function f(x). An engineer is walking along the top of the box cars at the rate of 3 mi/hr in the same direction as the train is moving. Write a formula for the speed of the engineer relative to the ground in terms of x and f.

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A slow freight train chugs along a straight track. The distance it has traveled after x hours is giv...