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Find the length of a rectangular lot with a perimeter of 132 m if the length is 8m more than the width? Why are minerals in water bad, tested with a ppm...? What is the external temperature of the liquid nitrogen tank? Will someone show me how to find what F(3) + G(4) - 2H(5)= if F(x) = 3x^2 + 1, G(x) = 2x - 3, H(x) = x ? How exercise impact breathing ins hypothetical situation where blood had a normal ph of 6.1 instead of 7.2?