Chapter 14.3, Problem 55E

(a)

To determine

To calculate: A linear function of t, the number of years since 2010, expressed by s, the annual spending of Medicare (in billions of dollars). Annual spending on Medicare was projected to increase from $526 billion in 2010 to around $977 billion in 2021.

(b)

To determine

To calculate: The 4-year moving average of $s\left(t\right)=41t+526$.

(c)

To determine

What can be said about the slope of moving average $\overline{s}\left(t\right)=41t+444$ of the function $s\left(t\right)=41t+526$.