Consider the following sample data for the relationship between advertising budget and sales for Product A:

Observation	1	2	3	4	5	6	7	8	9	10
Advertising ($)	40,000	50,000	50,000	60,000	70,000	70,000	80,000	80,000	90,000	100,000
Sales ($)	239,000	315,000	311,000	363,000	432,000	438,000	493,000	486,000	535,000	603,000

What is the slope of the "least-squares" best-fit regression line?

Please round your answer to the nearest hundredth.

Note that the correct answer will be evaluated based on the full-precision result you would obtain using Excel.