Well, I think that is for you to see how dBs and linear values works. Let's see:
Where is to calculate the multiple values for 1, 10, 100,1000,10000,100000 you get in dBs 0, 1, 2, 3, 4 and 5. That is, where in linear values there's a multipling factor of 10 in each value in dBs there's is only an increment factor of 1 respectively to each number in linear.
For the first question it's the same, you get in linear values: 0.01, 0.06, 0.1, 0.5, 1, 2, 2.5, 4, 15.8 . Where you see that each increment of 3dB equals to doubling the power.
I hope that this was useful!