You travel 5 mlles downstream in a kayak at a speed of r miles per hour. You turn around and travel 6 miles upstream at a speed of 0.75r miles per hour. Flinally, you turn around and return to your original starting point at a speed of r+1miles per hour. a. Write a model in simplified form for the total time t (in hours) of the trip. (r+1) b. How long does your trip take when r is 5 miles per hour? hours and minutes

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