Answer:
90-24=76°
Step-by-step explanation:
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The number of bottles in a full box is 12.
<u><em>Explanation</em></u>
Suppose, the number of bottles in a full box is 
So, the number of bottles in <u>three</u> full boxes 
Now, two more boxes are added, both of which have <u>one fewer bottle than the other three</u>. So, the number of bottles in these two boxes 
As there were 9 bottles initially and now there are 67 bottles in the fridge, <em><u>so the equation will be</u></em>....

Thus, the number of bottles in a full box is 12.
This answer us 16.97
you do square root of 288 and it will give you the answer of 16.97
He is not making a valid inference because he is assuming the student populations interest based on a small part/ group of the student population, his class.