David has been saving money to buy an e-book reader. A local store has just marked down the price of its readers by 20%. Each reader also comes with a
mail-in rebate for $10.
If the reader used to cost $120, what will be David's final price after the
markdown and rebato?
Complete each step to solve the problem and answer the question.
The amount of money saved after the 20% markdown is
3 of 3 QUESTION
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The total amount off includes the markdown and rebate. The total amount offis
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The expression for the final price is
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The final price is
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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.