We can see that the y intercept is: 7
The slope is 0 ,7 and the line pass throught (18, 16)
So:
m=(16-7)/(18-0) = 0.5
Finally we get that the equation of the line that best fit to the data is: y=0.5x+7.
And now we are going to find the pay rate at t = 10 years: y=0.5(10)+7=5+7=12, so the pay rate at 10 years is aproximately 12usd.
