Answer
a. please see image
b. linear
Work Step by Step
Use the table to plot points of the scatter plot.
Comparing this scatter plot with Figure 4.24,
(page 499, just before example 4),
its pattern best resembles the 2nd from the right,
the linear model.
(the slope fluctuates,
doesn't seem to always get steeper
or to constantly reduce the steepness
so the logarithmic and exponential models are not good fits)
