Help with correlation and coefficient

[Minni]

Hi just wondering if anyone could help me out with this question that I'm stuck with, it's a question from the past exam paper that might come up this year and I'm really struggling.
If you could even just tell me the way of doing it or the formulas needed for it,I'll do the calculations myself.

Thanks
Any help would be great!

 

[hlsmith]

Well it looks like a regression model was conducted. What do we know about the model? Was it a simple linear regression with dollars from one variable predicting dollars from the other? If so, what do you know about regression modeling that could help you?