Eight (8) tourists were asked about their airfare expenses and their total budgeted amount for their last travel/holiday.

Airfare (in $)	200	300	250	100	150	170	180	230
Total Budget (in $)	2500	2800	2100	1200	1800	1900	2000	2700

(a) Draw the scatter plot and the line of best fit. What is the expected budget for an individual of this group if the airfare to a certain city of her choice is $140? And what is the expected airfare if her budget is $2,200?

(b) Determine if there is a correlation between the two variables assuming that all travel costs are determined by the travelers' economic status. Describe the correlation strength, provide your conclusion, and a practical recommendation for the airline industry.