x=3,6,12,18,26

y=60,95,140,164,181

(c)Use a calculator to verify that (x) =65,(x²) =1189,(y) =640, (y²) =91,882,and (x y) =10,088.

Computer. (Enter a number. Round your answer to three decimal places.)

r=___

As x increases from 3 to 26months, does the value of r imply that y should tend to increase or decrease? Explain your answer.

a. Given our value ofr,yshould tend to increase asxincreases.

b. Given our value ofr,yshould tend to remain constant asxincreases.

c. Given our value ofr,yshould tend to decrease asxincreases.

d. Given our value ofr, we can not draw any conclusions for the behavior ofyasxincreases.