document.write( "Question 730255: An airplane is flying at a speed of 350 miles/hr at an altitude of one mile. The plane passes directly above a radar station at time t=0. \r \n" );
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document.write( "a. Express the distance s(in miles) between the plane and the radar station as a function of the horizontal distance d(in miles) that the plane has flown. \n" );
document.write( "b. Express d as a function of the time t (in hours) that the plane has flown. \n" );
document.write( "c. Use composition to express s as a function of t. \n" );
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