Answer
(a) See graph.
(b) $y = 0.1259x - 246.25$
(c) $7.82$ dollars.
Work Step by Step
(a) We can make a scatterplot of the data as shown in the figure.
(b) We can find a regression line for the data as $y = 0.1259x - 246.25$ as shown in the figure together with the data.
(c) At year 2018, we can find $y = 0.1259\times2018 - 246.25\approx7.82$ dollars.
