Answer:
<h2>30</h2>
Step-by-step explanation:

It's B because the car gets older as the years of ownership go up; resulting in a negative correlation on a graph. Hope I helped :)
The formula is y = mx + b when b = y-intercept and m is the slope.
Slope = Rise/Run So 1/2.
Y-Int. = The y value at which x = 0. Which is -3
The line has the formula:
Y = 1/2x - 3
Hope this helps :)