Lots of things.
Like to do drugs,sex,and etc.
The range would be (-infinity,5)
heres why..
x≤0 means that x is less than or equal 0 so if you plug in 0 then -1 then -2 ect. because we know all x's are 0 or less.
What it is saying is it is like having a peanut butter jelly sandwich without the bread. It is ridiculous and something that is needed to make a whole of something. So like per say, you have a teddy bear but you buy that teddy bear but it has no filling in it. So it's like claiming to be a car salesman, without the cars. I hope this helps, sorry if it doesn't make sense.
Your answer will be the last option:
Using sensory details to describe and create an image for readers.
This is exactly what imagery portrays in any type of art, not memoir alone.
yes
no
nope
depends on the ritual, for example: if it was a pagan ritual I'd be OK with it but if it's a satanic ritual I probably wouldn't be cool with it but I like to keep an open mind