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Solving Exponential Equations

Authored by Matt Foster

Mathematics

KG

Solving Exponential Equations
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9 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Solve

 27x=81.27^x=81.  

 x=43x=\frac{4}{3}  

 x=34x=\frac{3}{4}  

 x=43x=-\frac{4}{3}  

 x=34x=-\frac{3}{4}  

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Solve

 4x=32.4^x=32.  

 x=34x=\frac{3}{4}  

 x=25x=\frac{2}{5}  

 x=52x=\frac{5}{2}  

 x=14x=\frac{1}{4}  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Solve

 3x=127.3^x=\frac{1}{27}.  

 x=2x=-2  

 x=3x=3  

 x=3x=-3  

 x=9x=9  

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Solve

 3(x+1)=27.3^{\left(x+1\right)}=27.  

 x=2x=2  

 x=4x=4  

 x=4x=-4  

 x=2x=-2  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Find the solution for

 5(x+7)=25x.5^{\left(x+7\right)}=25^x.  

 x=2x=2  

 x=2x=-2  

 x=7x=-7  

 x=7x=7  

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Find the values of x when

 495x=343(2x+1).49^{5x}=343^{\left(2x+1\right)}.  

 x=12x=-\frac{1}{2}  

 x=14x=\frac{1}{4}  

 x=34x=\frac{3}{4}  

 x=54x=\frac{5}{4}  

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Find the value of x for

 5(2x+3)=1125.5^{\left(2x+3\right)}=\frac{1}{125}.  

 x=2x=-2  

 x=3x=-3  

 x=2x=2  

 x=3x=3  

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