The number of straight line miles traveled downriver in 1hour by Lucy's boat is approximated within a linear range by 3n+4 , where n represents her fuel consumption in unit/hr. Suppose that traveling x miles requires k hours at a fuel rate of 7 units/hr, but that increasing her fuel consumption by 5 units/hr would allow her to travel 40% further in 1 fewer hour. How far would she travel in k hours at a fuel rate of 10 units/hr?
Mathbot Says...
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