Which word describes the equation 17= t - 5?

A. TRUE
B. FALSE
C. OPEN
D.NOT GIVEN

I know it's not a or b and I'm not sure what an open sentence is

http://www.chacha.com/question/what-does-%22open%22-equation-mean-in-algebra

By the above definition, it is open.

To determine which word describes the equation 17 = t - 5, we need to understand the different types of sentences.

1. TRUE: This word describes an equation where the statement is correct or valid.

2. FALSE: This word describes an equation where the statement is incorrect or not valid.

3. OPEN: An open sentence is a type of statement that contains a variable and can be true or false depending on the value assigned to the variable. In other words, it is an equation or inequality with an unknown value.

4. NOT GIVEN: This word is typically used for situations where the required information to make a determination is lacking or unclear.

Now let's analyze the equation 17 = t - 5. The equation contains the variable "t," which means it is an open sentence. The word that describes this equation is C. OPEN.