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No. of atoms in 1.4 grams of nitrogen? Actuary exam? I am doing review for my algebra and need to know what kind of problem this is. It is 2x+4 / x+3 times x squared -9 /2 =-6? Write an algebraic equation to match the graph: (the graph is not drawn to scale)? What is the molar mass of hydroxide ions, present in many bases?