Pls help my brain hurt

What kinds of numbers make up the set of numbers called the real numbers? give examples when you explain a number type. there are a limited set of types of numbers, but an unlimited number of examples of these numbers.

Solve the triangle. a = 21°, c = 105°, c = 5

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.