The graph shows the sales (in billions of dollars) for Apple Inc. in the years 2009 through 2015.

(a) Use the slopes of the line segments to determine the years in which the sales showed the greatest increase and the least increase.
(b) Find the slope of the line segment connecting the points for the years 2009 and 2015.
(c) Interpret the meaning of the slope in part (b) in the context of the problem.

Transcribed Image Text:

300 + 250 (15, 233.72) -(14, 182.80). 200 (12, 156.51), (13, 170.91) 150 (11, 108.25), 100 (10, 65.23) (9, 42.91) 50 15 10 11 12 13 14 Year (9 + 2009) Sales (in billions of dollars)