1. Evaluate Expressions Lesson 14.2

2. Vocabulary Terms Terms = parts of an algebraic expression that are separated by an addition or subtraction sign. 6x + 3y Like terms = terms that have the same variable raised to the same power. 5x 2 + 4x 2

3. Computer Lab Problem There are 24 computers in the lab. A total of three groups of students come to the lab and 2 students sit at each computer. If each group has the same number of students, how many students are in each group?

4. Computer Lab Problem There are 24 computers in the lab. A total of three groups of students come to the lab and 2 students sit at each computer. If each group has the same number of students, how many students are in each group? C = computers, s = students, g= groups

5. Computer Lab Problem There are 24 computers in the lab. A total of three groups of students come to the lab and 2 students sit at each computer. If each group has the same number of students, how many students are in each group? c = computers, s = students, g= groups c times s divided by g = # of students

6. Computer Lab Problem There are 24 computers in the lab. A total of three groups of students come to the lab and 2 students sit at each computer. If each group has the same number of students, how many students are in each group? c = computers, s = students, g= groups c times s divided by g = # of students 24(2)/3 =

7. Computer Lab Problem There are 24 computers in the lab. A total of three groups of students come to the lab and 2 students sit at each computer. If each group has the same number of students, how many students are in each group? c = computers, s = students, g= groups c times s divided by g = # of students 24(2)/3 = 16 There are sixteen students in each group

8. School Food Ricardo runs the concession stand at school. s = sales, c = cost of food products, a = advertising costs. During the month of November, Ricardo spent $327 on food products and $50 on advertising for the concession stand. The sales were $349. How much money did the concession stand make or lose in November?

9. School Food During the month of November, Ricardo spent $327 on food products and $50 on advertising for the concession stand. The sales were $349. How much money did the concession stand make or lose in November? s - c - a = profit/loss

10. School Food During the month of November, Ricardo spent $327 on food products and $50 on advertising for the concession stand. The sales were $349. How much money did the concession stand make or lose in November? s - c - a = profit/loss $349 - $327 - $50 =

11. School Food During the month of November, Ricardo spent $327 on food products and $50 on advertising for the concession stand. The sales were $349. How much money did the concession stand make or lose in November? s - c - a = profit/loss $349 - $327 - $50 = $349 - $327 -$50 = $ - 28 (loss)

12. Algebraic Expressions Can Be Evaluated for Different Values Evaluate - 4x + 7 for x = - 2, - 1, 0, and 1 XY - 2 - 1 0 1

13. Algebraic Expressions Can Be Evaluated for Different Values Evaluate - 4x + 7 for x = - 2, - 1, 0, and 1 XY - 2 - 1 0 1 15 11 7 3

14. Practice Evaluate 2(a+b) 2 / c for a = - 5, b = 14, and c = - 3

15. Practice Evaluate 2(a+b) 2 / c for a = - 5, b = 14, and c = - 3 = - 54

16. Practice 6x + 5y + 17 + 2x…. How can you simplify? 24 + 13y 2 - 8y 2 …. How can you simplify?

17. Homework = PW 14.2 Odds only…