Write the Word or Phrase That Best Completes Each Statement $\mathrm{x}=1$

Write the word or phrase that best completes each statement or answers the question.
-The table shows the number of new AIDS cases (in thousands) in the U.S. in five consecutive years.

Let $\mathrm{x}=1$ correspond to 1988 and let $\mathrm{f}(\mathrm{x})$ be the number of new AIDS cases (in thousands) in the U.S. in year $x$ . Using the points $(1,30.7)$ and $(5,46.0)$ , the following linear function is obtained to model the data: $\mathrm{f}(\mathrm{x})=3.825 \mathrm{x}+26.875$ . Compare the number of new AIDS cases given by the model in 1990 with the actual number of new AIDS cases that year. How accurate is the model?