The position of a model train, in feet along a railroad

Last updated: 7/16/2022

The position of a model train, in feet along a railroad track, is given by s(t) = 2.5t + 17 after t seconds. (a) How fast is the train moving? ft/sec (b) Where is the train after 4 seconds? feet along the track (c) When will the train be 32 feet along the track? t= sec