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Find the Speed V, in Miles Per Hour, That Will C=v2800C = \frac { v ^ { 2 } } { 800 }

Question 72

Multiple Choice

Find the speed v, in miles per hour, that will minimize costs on a 125-mile delivery trip. The cost per hour for fuel is C=v2800C = \frac { v ^ { 2 } } { 800 } dollars, and the driver is paid W=$8W = \$ 8 dollars per hour. (Assume there are no costs other than wages and fuel.)


A) 675 mph
B) 125 mph
C) 800 mph
D) 80 mph
E) 40 mph

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