# Chapter 8 - Section 8.2 - Solving Quadratic Equations by the Quadratic Formula - Exercise Set - Page 494: 87b

This means that the number of college students equaled 24,500 in 2015.

#### Work Step by Step

We are asked to find when the number of students reaches 24,500. We use the quadratic formula $$x= \frac{-b \pm \sqrt{b^2-4ac}}{2a}$$ Where b is the coefficient of the term with a variable raised to the first power, a is the coefficient of the squared term, and c is the coefficient of the term without a variable in front of it. When we plug in the given values for a, b, and c, we get: 15 This means that the number of college students equaled 24,500 in 2015.

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