Coach martin went to the sporting goods store to get ready for tennis season. he bought 25 containers of tennis balls and 12 packs of grip tape. sales tax is 5%. how much does coach martin owe?
tennis ball containers, each $5.50
packs of grip tape, each $2.75
$187.00
$144.38
$179.03
$170.50

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.