Answer:
I don't really think there is one that is completely right. I would say f(x)= -0.23x²+1.967x+2.2 is the one that is closest to the answer.
44
Step-by-step explanation:
31.4
Because you multiply the circumference by pi
2/1
8/4 which is also 2/1
80/7 or 11.429
