Look it up on google that’s what it’s for
I think its a) 172.50 but im not exactly sure.
Do you mean how you can tell between an area formula and a volume formula? Well usually like on a reference sheet it says the shape and the letter a or v, a representing area and v representing volume. I hope this helps, if it doesn't please tell me in the comment section
It would be 10 the slope is always with the x
