Exponents and Variable Expressions

In 8r - 3 , the VARIABLE is ___

• 8

• r

• -

• 3

Like terms have the same _____ and the same _____.

• variables and numbers

• signs and numbers

• variables and exponents

• variables and signs

A letter used to represent a number value in an expression or an equation

• term

• coefficient

• constant

• variable

Write each product using an exponent. 
4 x 4 x 4 x 4 x 4 

• 4⁵

• 5⁴

• 4⁶

• 4⁶

Simplify the following expression:

2x³y⁵ ⋅ 5xy²

• 10x⁴y⁷

• 7x⁴y⁷

• 10x³y¹⁰

• 7x³y¹⁰

Simplify
(2a²b⁴z)(6a³b²z⁵)

• 8a⁵b⁶z⁶

• 12a⁶b⁸z⁵

• 12a⁵b⁶z⁶

• 8a⁶b⁸z⁵

Answer explanation

To simplify (3y)^3, we raise both 3 and y to the power of 3, resulting in 27y^3. Therefore, the correct choice is 27y^3.

Answer explanation

To simplify (2x)^2, we square both the base and the exponent, resulting in 4x^2. Therefore, the correct choice is 4x^2.

5x6 + 7²

• 79

• 78

• 69

• 56

What is the exponent form for 
6?

• 6⁰

• 6¹