Answer:
Third one
<1 = <4 and <2 = <3
Step-by-step explanation:
When two parallel lines form a Z shape, we call the angles at the vertices of Z to be alternate interior angles, which are equal
Idk, why does the world need problems like this, not like everyone is going to grow up to be a math teacher.
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.