Evaluting algebraic expressions evalute each expression if n = 6 1. 3n + 4 2. n÷ 2 - 1 3. 15 - n 4. n^2 - 5 5. (n - 2) × 9 6. 4n ÷ (3 + 1) 7. (18 - n ) × 2

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1. 3n + 4

3(6) + 4

18 + 4

22

2. N/2 - 1

6/2 - 1

3 - 1

2

3. 15 - n

15 - 6

9

4. n² - 5

6² - 5

36 - 5

31

5. 9(N-2)

9(6-2)

9(4)

36

6. 4n / 3+1

4(6) / 4

24 / 4

6

7. 2(18-n)

2(18 - 6)

2(12)

24

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which expression represents the approximate length of bc?

step-by-step explanation: