# Algebraic Expressions

# Variable Notations Exercises

### Example 1

Write *y* · *y* · *y* · *y* · *y* using exponent notation.

### Example 2

What are four different ways to write "*q* times *r*" in symbols?

### Example 3

What is wrong with abbreviating "*y* times 5" as *y5*?

### Example 4

How may "2 copies of *y*" be expressed?