Minimum Cost The cost of fuel to run a locomotive is proportional to the power of the
Chapter 3, Problem 56(choose chapter or problem)
Minimum Cost The cost of fuel to run a locomotive is proportional to the power of the speed. At a speed of 25 miles per hour, the cost of fuel is $50 per hour. Other costs amount to $100 per hour. Find the speed that will minimize the cost per mile.
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