Algebraic Expressions Basics

Solving quadratic equations

Using variables to represent unknown quantities (correct)

Graphing linear functions

Finding the area of a triangle

To find the volume of a sphere

To calculate the mean of a set of numbers

To represent relationships between quantities using variables (correct)

To simplify complex fractions

To maintain a fixed value in the expression (correct)

To denote irrational numbers

To represent unknown quantities

To change in value depending on the variable