at the end of fiscal year 2004, the federal debt of country C is $278,560,125,000. what is the closest estimation of this amount? express your answer in the form of a single digit times an integer to the power of 10

Question

A. 3 x 10^-11
B. 3 x 10^11

Answer 1

To estimate the federal debt of country C, which is $278,560,125,000, we can express this in scientific notation.

First, we can round the number to a single significant digit. The number is approximately 2.7856 x 10^11.

However, if we round it to one significant digit, it becomes 3 x 10^11.

So the closest estimation of this amount in the form of a single digit times an integer to the power of 10 is:

B. 3 x 10^11.