What is a closed sentence in the context of equations?

• An equation that can be true or false depending on the variable

• An equation that has no solution

• An equation that contains variables

• An equation that is always true or always false

How is a domain represented in algebra?

• Using commas

• Using braces

• Using brackets

• Using parentheses

What is the purpose of finding a solution set for an equation?

• To rewrite the equation in a different form

• To identify the domain of the equation

• To find values that make the equation true

• To determine if the equation is closed

Which of the following is true about the equation x + 2 = 2 + x?

• It is only true for x = 0

• It is true for any value of x

• It has exactly one solution

• It has no solution

What is the solution set for the equation 6x - 1 = 17 over the domain {2, 3, 4, 5}?

• {5}

• {2}

• {3}

• {4}