Please help I am one assignment behind this is the last question. alls I need is to know for this is how you get y= 2,500x - 2500 from the points (1,0) and (2,2.5).

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What number should be added to both sides of the equation to complete this square? x^2-10x=7

Acompany wants to reduce the dimensions of its logo by one fourth to use on business cards. if the area of the original logo is 4 square inches, what is the area of the logo that will be used on the business cards?

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .