I would choose a hat, because it is stylish and can keep me warm. My opportunity cost would be a ball, because it is useful for boring, lonely days. This is what I would write, Idk if you like it or not.
Answer:
6
Step-by-step explanation:
all you have to do is 30 / 5 what equals 6
Square
From what it looks like I think it is a square
x = 0
x = 3