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A pigeon was sitting 5 meters from the base of a telephone pole and flew 13 meters to reach the top of the pole. How tall is the telephone pole?

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters