1 math question

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1

<p><a href="http://imageshack.us/a/img16/5866/94192449.png%5B/url%5D"&gt;http://imageshack.us/a/img16/5866/94192449.png&lt;/a&gt;&lt;/p>

<p>for 12 bottles of shampoo of various brands,the cost and volume of each are displayed in the scatterplot above and the line of best fit for the data is shown.of the following,which is closest to the average cost per ounce for 12 bottles?
a)0.06
b)0.09
c)0.12
d)0.15
e)0.18</p>

<p>HOW?</p>

2

<p><a href=“http://talk.collegeconfidential.com/sat-preparation/759703-math-help-center-16.html[/url]”>http://talk.collegeconfidential.com/sat-preparation/759703-math-help-center-16.html&lt;/a&gt;&lt;/p&gt;

3

<p>Is the answer C?</p>

4

<p>I think c. Find the closest point to the best fit and divide the cost by whatever it says- 3/24= .125</p>

5

<p>I directly copied that link. But I didn’t understand the explanation. So I decided to make a new thread.</p>

<p>And yes it’s C. Why? Just pick a number that’s closest?</p>

6

<p>No, you have to pick a point on the best fit line.</p>

<p>According to the best fit line, it costs $3 for 25 ounces.</p>

<p>3/25 = .12</p>

<p>It works with any point, try approximately $4.2 and 35 ounces, another point on the line.</p>

<p>4.2/35 = .12</p>