Hi, this is the notation for inclusion of all real
numbers.

We can also state numbers which are positive or negative with a sign on top of the R notation like so:
Answer:
Infinite solutions
Step-by-step explanation:
All solutions are possible.
Answer:
512
Step-by-step explanation:
since its a cube, all the side lengths are even, so its just 8^3 or 8*8*8
Answer is D. last one
2 * 3 = 6
On the number line, 0 to 3, it's 3 units
then 3 to 6, there's another 3 units
so 2 x 3(units) = 6