Fitting Linear Models to Data · Exercise 24

The U.S. Census tracks the percentage of persons 25 years or older who are college graduates. That data for several years is given in the table. Determine whether the trend appears linear. If so, and assuming the trend continues, in what year will the percentage exceed 35%?

$$\begin{array}{cc}\text{Year}& \text{Percent Graduates}\\ \text{1990}& \text{21.3}\\ \text{1992}& \text{21.4}\\ \text{1994}& \text{22.2}\\ \text{1996}& \text{23.6}\\ \text{1998}& \text{24.4}\\ \text{2000}& \text{25.6}\\ \text{2002}& \text{26.7}\\ \text{2004}& \text{27.7}\\ \text{2006}& \text{28}\\ \text{2008}& \text{29.4}\end{array}$$

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Algebra and Trigonometry 2e · §4.3 Fitting Linear Models to Data · Exercise 24