9 to 25
Honestly i've never been good at ratios, so i'm sorry if this is incorrect.
Answer:

Step-by-step explanation:
Think of Log as a complimentary operation to powers.

means you need to find the exponent of 2 that yields 1/8.
As this number is putting the base on the denominator, we know for a fact it must be some negative number, or

Then, by trial and error works just fine, going through the powers of 2.

And that is it.
Answer:34.83
Step-by-step explanation:
4.5kwh+ 9kwh Is 13.5kwh which is how much is being used with both the freezer and a washing machine
It cost 21.5 per kWh so multiply 13.5 by 21.5 to get 290.25
To see what it would be in a year multiply 290.25 by 12(months in a year) to get 3483