Chapter 2.4, Problem 16E

Exercises 11-18 Write a formula for a linear function that models the situation Choose both an appropriate name and an appropriate variable for the function State what the input variable represents and the domain of the function Assume that the domain is an interval of the real numbers

16. Speed of a Train A train is traveling at $60$ miles per hour and then begins to slow down at a constant rate until its speed is $10$ miles per hour $50$ minutes later