Math Quiz

For which values of x is the expression below undefined?

• -3, 5

• -3, 5, 6

• 3, 5

• 3, -5, -6

Which expression represents the distance from point A to O?

• A - O

• √A

• |A|

• A^2

Which value of the variable would make the expression √3x – 7 undefined in the real numbers?

• 3

• 7

• 4

• 1

Which value of m would make the equation true?

• 3

• 9

• 27

• 81

Which value(s) of the variable would make the expression below undefined?

• 1

• 1, 3

• 2

• 5, 2

Which expression below would be the best way to represent "the distance between two points, r and s, on a number line"?

• r – s

• |r – s|

• s – r

• |s| – |r|

Which value for the variable would make the expression √7y + 14 undefined in the real numbers?

• 2

• -2

• 3

• -3

Which number could be placed in the blank to make the equation true?

(a)  

Examine the equation below, then determine which of the following would be the most logical first step in solving the equation: 3(4x - 7) + 8 = 4x + 5 - x.

• Add 7 to both sides of the equation

• Divide both sides of the equation by 3

• Distribute the 3 to every term on the left hand side

• Combine like terms on the right hand side

Firenze wants to take ballet lessons. The dance school she goes to charges an enrollment fee of $50, then $55 monthly to take a class. Which expression represents the total cost of classes for Firenze if she dances for m months?

• 55m + 50

• 50m + 55

• (55 + 50)m

• 55 + 50 + m