Around-cut diamond has an ideal weight of
0.0071d3-0.090d2 +0.48d where w is its weight (in
carats) and d. its diameter (in millimeters). According to the
model, what is the diameter of such a diamond weighing 10
carats? (Use a graphing calculator).

Use a calculator to verify that σ(x) = 62, σ(x2) = 1034, σ(y) = 644, σ(y2) = 93,438, and σ(x y) = 9,622. compute r. (enter a number. round your answer to three decimal places.) as x increases from 3 to 22 months, does the value of r imply that y should tend to increase or decrease? explain your answer. given our value of r, y should tend to increase as x increases. given our value of r, we can not draw any conclusions for the behavior of y as x increases. given our value of r, y should tend to remain constant as x increases. given our value of r, y should tend to decrease as x increases.