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7-5C Live Review

7-5C Live Review

Assessment

Presentation

Mathematics

9th - 12th Grade

Medium

Created by

Jennifer Hedges

Used 3+ times

FREE Resource

4 Slides • 2 Questions

1

7-5C Live Review

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2

Multiple Choice

Q1:   log3(n2+4n)=log3(35+2n)\log_3\left(n^2+4n\right)=\log_3\left(35+2n\right)  

1

5

2

5, -7

3

-3, 5

4

-7

3

 log3(n2+4n)=log3(35+2n)\log_3\left(n^2+4n\right)=\log_3\left(35+2n\right)  

  •  n2+4n=35+2nn^2+4n=35+2n  

  •  n2+2n35=0n^2+2n-35=0  

  •  (n+7)(n5)=0\left(n+7\right)\left(n-5\right)=0  

  •  n=7, n=5n=-7,\ n=5  

  •  n=7, 5n=-7,\ 5  

4

Multiple Choice

Q2:   log3 x + log3 4 = 4\log_3\ x\ +\ \log_3\ 4\ =\ 4  

1

 272\frac{27}{2}  

2

 32\frac{3}{2}  

3

 97\frac{9}{7}  

4

 814\frac{81}{4}  

5

 log3 x + log3 4 = 4\log_3\ x\ +\ \log_3\ 4\ =\ 4  

  •  log3 4x = 4\log_3\ 4x\ =\ 4  

  •  34=4x3^4=4x  

  •  81=4x81=4x  

  •  814=x\frac{81}{4}=x  

6

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Solving Exponential Equations Using Logs

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