You travel 3 miles downstream in a kayak at a speed of r miles per hour. You turn around and travel 4 miles upstream at a speed of 0.5r miles per hour. Finally, you turi and return to your original starting point at a speed of r +1 miles per hour. a. Write a model in simplified form for the total time t (in hours) of the trip. Mr+ 1) b. How long does your trip take when r is 4 miles per hour? hours and minutes
You travel 3 miles downstream in a kayak at a speed of r miles per hour. You turn around and travel 4 miles upstream at a speed of 0.5r miles per hour. Finally, you turi and return to your original starting point at a speed of r +1 miles per hour. a. Write a model in simplified form for the total time t (in hours) of the trip. Mr+ 1) b. How long does your trip take when r is 4 miles per hour? hours and minutes
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:You travel 3 miles downstream in a kayak at a speed of r miles per hour. You turn around and travel 4 miles upstream at a speed of 0.5r miles per hour. Finally, you turi
and return to your original starting point at a speed of r +1 miles per hour.
a. Write a model in simplified form for the total time t (in hours) of the trip.
t=
Ar+ 1)
b. How long does your trip take when r is 4 miles per hour?
9
hours and
minutes
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