Quiz about Inverses and Logs Review

Question 1

Rewrite the log as an exponent $$\log_381=4$$

Accepted Answer

$$3^4=81$$

Answer

$$81^3=4$$

Answer

$$3^5=81$$

Answer

$$4^3=81$$

Question 2

$$\log_7?=2$$

Accepted Answer

49

Answer

36

Answer

81

Answer

64

Question 3

$$\log_464=?$$

Accepted Answer

3

Answer

5

Answer

4

Answer

2

Question 4

Find the inverse of $$f\left(x\right)=x^2-10$$

Accepted Answer

$$f^{-1}\left(x\right)=\sqrt[]{x+10}$$

Answer

$$f^{-1}\left(x\right)=\left(x-10\right)^2$$

Answer

$$f^{-1}\left(x\right)=x^2-10$$

Answer

$$f^{-1}\left(x\right)=\sqrt[]{x}+10$$

Question 5

The graph on the left shows f(x). Identify the graph of the inverse $$f^{-1}\left(x\right)$$

Accepted Answer

Question 6

Using SOHCAHTOA, identify the missing side length x. Round to the nearest whole number

Accepted Answer

29

Answer

3

Answer

46

Answer

12

Question 7

Find the equivalent expression

$$x^2+12x+20$$

Accepted Answer

(x + 2)(x + 10)

Answer

(x + 5)(x + 4)

Answer

(x + 3)(x + 8)

Answer

(x + 6)(x + 7)

Question 8

Find the excluded values

$$\frac{\left(x-8\right)}{\left(x-3\right)\left(x+10\right)}$$

Accepted Answer

x = 3, x = -10

Answer

x = 3, x= -10 , x= 8

Answer

x = 3, x = 8

Answer

x = 0, x=8

Question 9

F(x) has the following point (3,-1). What point must be on the inverse $$f^{-1}\left(x\right)$$

Accepted Answer

(-1,3)

Answer

(-3,1)

Answer

(1,-3)

Answer

(-3,-1)

Question 10

Simplify

$$\frac{x^2y^4r}{x^4yr^5}$$

Accepted Answer

$$\frac{y^3}{x^2r^4}$$

Answer

$$\frac{y^4}{x^2r^4}$$

Inverses and Logs Review

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