Hey everyone! This page makes no sense to me, so can you please help/explain it? Thank you.

Answer:
Step-by-step explanation:"its asking for the varible. a varible is is a symbol used to represent an arbitrary element of a set. In addition to numbers, variables are commonly used to represent vectors, matrices and functions. Making algebraic computations with variables as if they were explicit numbers allows one to solve a range of problems in a single"