1. Splash Screen

2. Lesson Menu Five-Minute Check (over Lesson 5–6) Main Idea and Vocabulary Key Concept: Order of Operations Example 1:Evaluate Expressions Example 2:Write and Evaluate Expressions Example 3:Use a Function Table

3. Main Idea/Vocabulary I will use order of operations to evaluate expressions. order of operations

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5. Example 1 Evaluate Expressions s = 3 × 6 + 4 × 5 s =38 s =18 20+ Multiply 3 and 6. Multiply 4 and 5. Add 18 and 20. Find the value of 3 × 6 + 4 × 5. Answer: 38

6. 1.A 2.B 3.C 4.D Example 1 A.12 B.26 C.14 D.21 Find the value of 2 × 7 + 3 × 4.

7. Example 2 Write and Evaluate Expressions Teresa practices on her guitar 20 minutes on school days (M–F) and 30 minutes on the other days. Write and evaluate an expression to find how many minutes she practices in one week. On five days, Teresa practices for 20 minutes. On two days, she practices for 30 minutes. 20 × 5 + 30 × 2 number of minutes number of days number of minutes number of days

8. Example 2 Write and Evaluate Expressions Now evaluate. m = 20 × 5 + 30 × 2 m =100 +60 m =160 Multiply 20 by 5. Multiply 30 by 2. Add 100 and 60. Answer: So, Teresa practices 160 minutes in one week.

9. 1.A 2.B 3.C 4.D Example 2 A.100 minutes B.240 minutes C.380 minutes D.410 minutes Samuel practices baseball for 60 minutes on Monday through Friday at school and 40 minutes on the weekends. Write and evaluate an expression to find how many minutes he practices in one week.

10. Example 3 Use a Function Table The cost of shipping books is $4 plus $2 for each book purchased. Find the function rule. Then make a function table to find the cost of shipping 5, 6, and 7 books. First multiply 2 by the input value. Then, add 4. The function rule is 2b + 4.

11. Example 3 Use a Function Table 5 6 7 2 × 5 + 4 2 × 6 + 4 2 × 7 + 4 $14 $16 $18 Answer: The costs are $14, $16, and $18.

12. 1.A 2.B 3.C 4.D Example 3 A. 12x + 25 The cost of renting a kitchen appliance is $12 an hour plus $25 dollars. Which shows the function rule? B. x + 12 + 25 C. 25x + 12 D. 12 × 25

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14. Resources Five-Minute Check (over Lesson 5–6) Image Bank Math Tool Chest Multiplication Expressions

15. 1.A 2.B 3.C 4.D Five Minute Check 1 (over Lesson 5–6) Find the function rule. Then make and complete a function table. A bag of flour weighs 5 pounds. Find the total weight of 2, 4, 6, and 10 bags of flour. A.B. C.D.

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