Write the algebraic expression Substitute values for the variables To evaluate an algebraic expression: 1. 3. 2. 4. A letter that is used to represent one or more numbers A collection of numbers, variables, operations and grouping symbols. Write the algebraic expression Substitute values for the variables Simplify the numerical expression

Algebraic expressions are often used to model real-life quantities Algebraic expressions are often used to model real-life quantities. You can translate a verbal model into an algebraic model by using labels. Algebraic models are sometimes called formulas. Verbal Model Labels Algebraic Model 5. Evaluate the formula 6. A rover driving on the moon’s surface travels at a speed of 60ft/min. How far will it travel in 90 min? The area of a rectangle is the product of its length and its width. The distance traveled is the product of the rate and the time. P = 2l + 2w when l = 4 and w = 6