The question i'm having a problem with is the following: copy and complete: 3t-4 is a(n)_?expression and 5+13 is a(n)_? Expression. Do they mean a numerical expression?

Both are algebraic expressions.

One is a linear expression while the other is a numeric expression.

But which is which?

if x=4, which of the following expression does Not equal 9?

Yes, they mean a numerical expression.

To determine the type of expression, you need to understand the different types of expressions. There are two main types: numerical and algebraic expressions.

1. Numerical Expression: A numerical expression contains only numbers and operations such as addition, subtraction, multiplication, and division. There are no variables in a numerical expression. The values are calculated using the given numbers and operations.

2. Algebraic Expression: An algebraic expression contains numbers, variables, and operations. It represents a relationship between numbers and variables. Variables can take different values, and the expression can be evaluated for different values of the variables.

Now, let's analyze the given expressions:

1. 3t-4: This expression contains the variable "t" and uses the operation of subtraction. Since it includes a variable, it is an algebraic expression.

2. 5+13: This expression contains only numbers and the operation of addition. There are no variables present. Hence, it is a numerical expression.

Therefore, to answer your question, 3t-4 is an algebraic expression, and 5+13 is a numerical expression.