Question

What is a variable?

a.
A variable is an unknown number or value represented by a letter
c.
A variable represents a change in value
b.
A variable always represents the total amount
d.
A variable is always represented by the letter x

Answer 1

Answer: A

Step-by-step explanation: nope

Answer 2

A variable is an unknown number or value represented by a letter.

For example find the missing variable:

2x - 3 = 9