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8 January, 10:04

A chemist has 500 ml of a 30% acid solution. She adds x milliliters of a 10% acid solution. Which statement is true about the graph of the function that represents the concentration of the final solution?

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  1. 8 January, 10:19
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    Let y be concentration of the final solution:

    y = (0.1x + 0.3 (500)) / (500 + x)

    y = (0.1x + 150) / (500 + x)

    The numerator contains the total amount of acid and the denominator contains the volume of the solution.
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