A study estimated that the Correlation coefficient for the sales of winter boots and temperature increasing is r=-0.90. According to this correction coefficient, how are the sales of winter boots expected to change as the temperature increases? A. It will decrease.

B. It will stay the same.

C. It will increase.

Which linear regression equation best fits the given points?

(1,18), (4,15), (5,11), (8,9), (10,7), (13,4), (15,0)

A. y=-5/6x-18.9

B. y=5/6x-19.2

C. y=6/5x+19.2

D. y=-6/5x+18.9