Chapter 7.6, Problem 34E

(a)

To determine

To calculate: The average cost of a family health insurance plan in $2008$ with the help of a linear model using the information below:

The provided graph is:

And, the linear model,$f\left(x\right)=782x+6564$, it represents the average cost of family health insurance plan $x$ years after $2000$.

(b)

To determine

The average cost of a family health insurance plan in $2008$ with the help of an exponential model using the information below:

The provided graph:

And, the linear model,$f\left(x\right)=782x+6564$, it represents the average cost of family health insurance plan $x$ years after $2000$.

(c)

To determine

To calculate: Better model for data in $2008$ using information below:

The provided graph:

And, the linear model,$f\left(x\right)=782x+6564$, it represents the average cost of family health insurance plan $x$ years after $2000$.