Write a polynomial function of least degree with integral coefficients whose zeros include 4 and 2i

Which is the focus of a parabola with equation y2=4x

Jimmy can run 3.5 miles in 20 minutes. how far can ne run in one hour and ten minutes?

An airplane is flying at an elevation of 5150 ft, directly above a straight highway. two motorists are driving cars on the highway on opposite sides of the plane, and the angle of depression to one car is 35 ̊ and to the other is 52 ̊. how far apart are the cars?