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Answer:
<h2>María used only 792 square centimeters to cover the best seller.</h2>Step-by-step explanation:
The volume of the best seller is about a rectangular prism, which is
Where is width,
is length and
is height.
In this case, we have
Replacing values in the formula, we have
Now, according to the problem, 10% of paper covers the book, that means we need to find the suface area and then find the 90% of the paper missing. The formula for surface area is
Replacing values, we have
If 792 square centimeters is 10% of the total paper, then
Therefore, there is 7,920 square centimeters of papers, but María used only 792 square centimeters to cover the best seller.
You just have to simplify that point-slope equation in order to get it into slope-intercept:
