Usually contain only one operation i'm dumb (i can't see algebra as a category )

I would say Arithmetic.

Step-by-step explanation:

Arithmetic problems you normally do in your head. An example would be 5x5.

Arithmetic problems don't tend to have more then one operation because it's head math, lol

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.