A business analyst in the Washington, D.C. area looked at the following Christmas 2016 and 2017 toy sales in Metro D.C. Six toy stores were were contacted and shared the following information where x is 2016 sales and y represents 2017 

x (in dollars)         y (in dollars)

10,000                      11,500

5000                          4500

7500                          8500

12,500                    13,000

8500                         8300

5500                         4800

a. Find an equation of the least squares regression line with the slope and y-intercept rounded to 2 decimal places

b. Using (a) with a 2016 December holiday sales of $6000, what is the predicted 2017 December holiday sales?

c. for a 2016 sales number of $25,000, the 2017 December prediction would be?

d. What would be your guess for 2018 Christmas sales with everything we talked about in our class?