- What is x? 4x = -2x + 30?

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How many grams of carbon are there in 3.785x10 to the 26 power atoms of carbon? Does the earths albedo change? Vangelis said the albedo is 0.39 but i wonder if it still is? What is the equation of the axis symmetry y = - x^2/10 + 9x/10 +11/5 and how to find the coordinates of the vertex to one decimal place? Commercial carpet cleaning rates per square foot.? Why does a lab supply of 200 proof ethanol seem warmer once a small amount of water is added, despite both being the same temperature?