Answer
20 feet
Work Step by Step
$s(t)=2.5+10$
$s(4)=2.5*4+10=10+10=20$
The train went 20 feet in 4 seconds.
Finite Math and Applied Calculus (6th Edition)
by Waner, Stefan; Costenoble, Steven
Published by
Brooks Cole
ISBN 10:
1133607705
ISBN 13:
978-1-13360-770-0
Chapter 1 - Section 1.3 - Linear Functions and Models - Exercises - Page 92: 93b
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