Answer
after 6 seconds
Work Step by Step
$s(t)=2.5t+10$
$25=2.5t+10$
$15=2.5t$
$t=6$
The train will be 25 feet along the track after 6 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: 93c
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