OpenStax, Algebra and Trigonometry 2e §5.7 Inverses and Radical Functions · Exercise 70 · Algebra · Polynomials

Inverses and Radical Functions · Exercise 70

Determine the function described and then use it to answer the question.

A container holds 100 mL of a solution that is 25 mL acid. If $n$ mL of a solution that is 60% acid is added, the function $C (n) = \frac{25 + .6 n}{100 + n}$ gives the concentration, $C,$ as a function of the number of mL added, $n .$ Express $n$ as a function of $C$ and determine the number of mL that need to be added to have a solution that is 50% acid.

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OpenStax, Algebra and Trigonometry 2e · §5.7 Inverses and Radical Functions · Exercise 70

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