Edit: waiting for confirmation, no way to delete 
That’s what i thought. I couldnt prove II but there was no I and III only so I put all of them
I got all 3 for the numeral. Tested each out by making f(x) = 2
@holyground I legit was thinking the same way. I was going to put all of them but then I was like leme take a risk and go with III only lol.
The second numeral choice was a flip and negation of the first numeral choice so those equal the same thing.
i just want my score already smh. i cannot wait 2 months.
@Aleksandr7 How is the third numberal wrong though?
@YoohooAddict
Didn’t take the test, but test something like 8X.
Integral from 0 to 2 of 8x is 32.
Integral from 1 to 3 of (8x)-1 is 30.
32 =/= 30.
2 is correct; try it with any function and you’ll get the same answer.
Seems like I and II were the only correct ones.
Good luck.
@Aleksandr7 Using my f(x) = 2 model would it even matter? Plugging in anything for x would result in 2 and you just have to keep finding the area under that same graph.
This is exactly correct. However, point II is also correct.
@appgodxoxo Actually your example works for what I said. Integral from 0 to 2 of 8x is 16 and integral from 1 to 3 of 8(x-1) is also 16.
but wouldnt that mean e^2 - e^0 is the same as e^3-1 - e^1-1?
@YoohooAddict If it’s f(x-1), then yes. I thought you said f(x)-1. However, Aleksandr just proved you wrong with his e^x example.
Did anyone get 2290pi/400 for the volume of the funnel?
Hey guys I never discuss the specifics but for those of you wondering how they grade it, they show their scoring rubric on their released free responses. I’d recommend for any APs you look at how they grade it, last year I took stats and according to their rubric got 3/4 on some question without even solving it.
@holyground Yep, I’m wrong.
Try it with 8x^2 and 8(X^2-1). Different answers.
@holyground Exactly how I’m thinking about it…
@appgodxoxo You’re doing it wrong. it’s f(x-1) not f(x) -1 so if f(x) = 8x^2 then f(x-1) is 8 (x-1)^2.
oh god just leave it guys its one question lol. i probably got it wrong haha