Evaluating Expressions

Front

Which of the following is NOT an example of a variable? 8, x, u, n

Back

8

Front

Evaluate bc + 5a when a = 3, b = 4, and c = -6

Back

-9

Front

What are the variables in 3x + y?

Back

x, y

Front

Evaluate 5m + 9n if m = -7 and n = 4

Back

1

Front

Define variable

Back

A letter or symbol standing for an unknown value.

Front

What is a variable in mathematics?

Back

A symbol used to represent a number that can change.

Front

Evaluate 2x + 3 when x = 5

Back

13

Front

What is the value of x in the equation 3x = 12?

Back

4

Front

If a = 2 and b = 3, what is the value of 4a + 5b?

Back

29

Front

What does it mean to evaluate an expression?

Back

To calculate the value of the expression by substituting variables with numbers.