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What's the best whole home water filtration system to remove Chlorine and Fluoride from my water? What is the scale factor of a rectangular prism that s volume is half the original volume? What is the pressure of 622 mm Hg equal to in atm? and what the work for it looks like? If a + 1/a = 10, find |a² + 1/(a²)|? Pre-calculus Help? Parametric Functions?