A contributing factor to an airplane’s duel consumption is the bypass ratio of the engine system. The bypass ratio is the amount of air passing around the engine core relative to the amount of air passing through the core. An airplane manufacturer is designing a new airplane and wants to determine the bypass ratio for the airplane’s engine system. The airplane will fly 3,700 hours per year and will average 430 miles per hour. The amount of fuel that the airplane consumes can be expressed as:
z = 0.0548 – (7.6*10^-4) * y
for 4 < y < 12
where y is the
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