someone who knows my pain

Just round down to zero.

No, wait, that's physics...

I have a screenshot of the time it showed me my graph and the "right" graph and marked me wrong when they were 100% identical.
 
Unfortunately I'm not on that computer currently.

I've never had that much trouble with it...

Takuma Nuva

I've learned that school never actually wants to know what you think, or if you trust it.

Rather, it always asks "what did the curriculum designer think about what this statement meant" or "did the curriculum designer trust this data"

As such, one must just act as though they wrote all these silly questions and somehow it all works out.

(I really hate it when they ask it like that, though. Really makes no sense. If you are taking a stats class and asking about data like that, ask if the data is reliable, or if there are any outliers, etc etc. Really isn't all that hard to actually ask what you want to know. -.-)

MasteringPhysics is terrible for me...

*Rounds to two significant figures, like it asks.

*Significant digits feedback: it changes my answer to three significant figures because that's totally two.