5. A set of 9 books has 5,487 pages. Estimate the number of pages in
each book, if each book has the
same number of pages.

the answer is a

step-by-step explanation:

because if you put 1 in to the square root of x it equals 300.

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