$\log_3 \Big(\dfrac{1}{27}\Big) =$

1. 3

2. $\dfrac{1}{3}$

3. $-\dfrac{1}{3}$

4. -3

log 5 + 2log 3 =

1. log 11

2. log 45

3. log 30

4. log 14

The value of log 0.0001 to the base 0.1 is:

1. 4

2. 3

3. $\dfrac{1}{4}$

4. $\dfrac{1}{3}$

If log_x 243 = 5, then x =

1. 5

2. 3

3. $\dfrac{1}{3}$

4. 1