If log₅ (8x - 3) = 3, then x =

1. 8

2. 16

3. 32

4. 40

If log_x 0.0016 = 4, then the value of x is:

1. 2

2. 0.2

3. 0.1

4. 4

If log₁₀ 2 = 0.3, then log₁₀ 8 =

1. 0.9

2. 0.6

3. 1.2

4. none of these