Real Numbers

Which of the following numbers is irrational?

• √8
• ¾
• 2
• -1.325

-4 is not a whole number because:

• It's negative and whole numbers are positive.
• it's irrational.
• it cannot be turned into a fraction.
• it is even.

List all the classifications of numbers that apply to the real number. 
-1/4

• None
• Rational, Integer, Whole
• Natural, Whole, Integer, Rational
• Rational

The 3 in 3xy is called the _______

• constant

• variable

• term

• coefficient

Which of these is a whole number?

• -9

• 0.983

• 203

• 1/2

How many terms are in this expression?
 $7x^3+9x+9y-2$ 

• 3

• 4

• 1

• 2

What is/are the coefficient(s) of this expression?
 $9x^7+8x^3-2$ 

• 7 and 3

• 9 and 8

• 7

• -2

What is/are the constant(s) of this expression?
 $9x^7+8x^3-2$ 

• 7 and 3

• 9 and 8

• 7

• -2

What is/are the variable(s) of this expression?
 $2x^3+8x^2+5x-1$  

• 2, 8, and 5

• 3, 2, 1, and 0

• x

•  $x^3,\ x^2,\ x$  

Simplify: $\sqrt{18}$  

•  $2\sqrt{9}$  

•  $9\sqrt{2}$  

•  $3\sqrt{2}$  

•  $2\sqrt{3}$