Answer:
She takes 18 to school.
1/5 of 30 is 6 so 2/5 of 30 is 12
30 minus 12 is 18
Yurrrrrrrrrrr definitely a weird number
Boys: x
gilrs: y
From the text of the task:

Replacing x:

So there are 28 girs and 20 boys
Answer:
if you draw LMN in the first quadrant, you need to draw L'M'N' in the third quadrant using the same coordinates as LMN but in the negative form.
The line you draw trough L and L' and both other two lines all go through the origin.
Answer:
It cant be converted to decimal or fraction while it is a integer