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Sec 1: Evaluating Expressions

Sec 1: Evaluating Expressions. Learning Target: I will evaluate algebraic expressions for a given value using the order of operations and technology. Pre-Unit: Intro to Algebra II. O n Facebook. 15 + 10 x 0 = ? Like = 0 Share = 15 Comment = 25.

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Sec 1: Evaluating Expressions

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  1. Sec 1: Evaluating Expressions Learning Target: I will evaluate algebraic expressions for a given value using the order of operations and technology. Pre-Unit: Intro to Algebra II

  2. On Facebook 15 + 10 x 0 = ? Like = 0 Share = 15 Comment = 25 Write what you think it is in your notes.

  3. 15 And the answer is… Second Chance: Like = 2 Share = 288 Comment = both Write your answer in your notes. Answer: 288

  4. Order of Operations • P___________ • E___________ • M__________ • D__________ • A__________ • S___________ arentheses • Simplify (6-2)² - 4 + 9 ÷ 3 using the order of operations. • Check yourself using your calculator. • Did your answers match? If not, where did you go wrong? xponents ultiply ivide ddition ubtraction

  5. Ex 1: Evaluate each expression using the order of operations and then check using your calculator. • A. for • B. if and Solution: 625 Solution: -78.968

  6. Ex 2: The Challenge! • Evaluate for w = 4, x = -3 and y = -5.

  7. Ex 3: Geometry The formula for the area A of a trapezoid is , where h represents the height, and b1 and b2 represents the measures of the bases. Find the area of a trapezoid with base lengths of 13 meters and 25 meters and a height of 8 meters.

  8. EX. 4 The average price for a movie ticket can be represented by where y is the number of years since 1980. • Find the average price of a ticket in 1990, 2000, and 2010. • Another equation that can be used to represent ticket prices is . Find the price of a ticket in 1990, 2000 and 2010. • How do the values in part b compare to those found in part a?

  9. H.A.2.-HOMEWORK • PG 7 # 1-10, 17, 24, 27, 38, 43 Show all work using the order of operations. You may use the calculator for only one operation at a time. Do NOT put the entire expression in the calculator. Round to the 3rd decimal place when necessary.

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