On the Richter scale, which measures the total amount of energy released during an earthquake, a reading of x-1 indicates one-tenth the released energy as is indicated by a reading of x. On that scale, the frequency corresponding to a reading of 5 is how many times as great as the frequency corresponding to a reading of 3?  Choices.
A) 100
B) 200
C) 10 ^ 4
D) 10 ^ 5
E) 10 ^ 6

Rationale: if richter scale reading goes from x - 1 to x it will be 10 if richter scale reading goes from 3 to 4 it will be 10 if richter scale reading goes from 4 to 5 it will be 10 so it will from 3 to 5 i . e 4,5 = 10 * 10 = 10 ^ 2 answer is a
Answer: A