Unit 6 Review

Which is equivalent to 3^{4 ?}

• 27
• 9
• 81
• 12

Which is equivalent to 5 x 5 x 5 x 5

• 5³
• 5⁴
• 4⁵
• 5⁵

Which is equivalent to 2⁴

• 8
• 20
• 16
• 12

Which is equivalent to 4 x 4 x 4 x 4 x 4

• 4⁶
• 5⁴
• 4⁴
• 4⁵

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4
• 2a + 2b + 4
• 8ab
• 4ab + 4

A constant term has ______.

• no exponents
• no variables
• no numbers
• no letters

A coefficient is __________.

• the variable
• a constant
• an exponent
• the number that comes before the variable

What is the coefficient here?
17u + 8

• 17
• 8
• 17u
• -8

2r + 2 + 5r - 2 + r 

• 8r 
• 8r - 4 
• 12r 
• 7r + 4 + r 

y + x + y + y + x 

• 2 + 3 
• x + y 
• 2x + 3y 
• 5xy