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#1 Help Me ! » Please help!! - thanks » 2011-03-28 14:17:18

caymanisland
Replies: 9

Brenda drives an 18 wheeler.   she plans to buy her own truck. Her research indicates that the expected running costs, C, in dollars, per 100 km, are given by C(v)=0.9 +0.0016v square, where v is the speed, in kilometers per hour.   Brenda's first trip will be 1500 km, round trip. she plans to pay herself $30/h.  determine the speed that will minimize Brend's cost for the trip

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