Chapter 6, Problem 26T

To determine

To calculate: The validity of model data shown by the graph based on the exercise (24) and exercise (25) using the provided graph.

For exercise (24):

The system income was $\$575\text{billion}$ in the year, $2004$ and it increased at an average rate of $\$43\text{billion}\text{per}\text{year}$.

For exercise (25):

The provided expression is written below:

$B=0.07x^2+47.4x+500$

where,$B$ represents the amount paid in benefits, in billion dollars and $x$ represents year after $2004$.