Rachel
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Khan Academy on a Stick
Example: evaluating an expression
Variables and Expressions 1
Variables and expressions
What is a variable?
Why aren't we using the multiplication sign
Example: evaluating an expression
Example: evaluate a formula using substitution
Evaluating exponential expressions 2
Expressions with two variables
Example: Evaluating expressions with 2 variables
Examples of evaluating variable expressions
Example evaluating expressions in word problems
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