Write this equation into standered form and give me the key points ie ig a parabola the focus and vertex, if circle, center and radius: x^2-4y^2-2x-8y=7

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect

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?

Asalesperson has january sales of $20,000(1,$20,000) and april sales of $80,000 (4,$80,000). what is the rate of change?