An airplane is asked to stay within a holding pattern near
Chapter 7, Problem 105(choose chapter or problem)
An airplane is asked to stay within a holding pattern near Chicagos OHare International Airport. The function d1x2 = 70 sin10.65x2 + 150 represents the distance d, in miles, of the airplane from the airport at time x, in minutes. (a) When the plane enters the holding pattern, x = 0, how far is it from OHare? (b) During the first 20 minutes after the plane enters the holding pattern, at what time x is the plane exactly 100 miles from the airport? (c) During the first 20 minutes after the plane enters the holding pattern, at what time x is the plane more than 100 miles from the airport? (d) While the plane is in the holding pattern, will it ever be within 70 miles of the airport? Why?
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