Scores on the GRE (Graduate Record Examination) are normally distributed with a mean of 511 and a standard deviation of 116. Use the 68-95-99.7 Rule to find the percentage of people taking the test who score between 163 and 511. The percentage of people taking the test who score between 163 and 511 is nothing

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents

30.5*10=350$

you have to multiply the number without the decimal point then add it later but if its tenn u must move the place value of the decimal point 1 to the right.