at the end of fiscal year 2004, the federal debt of country c is $278,560,125,000. what is the closest estimation to this amount?

express your answer in the form of single digits times as integer power of 10.

3x10^-11
2x10^11
3x10^11
2.79x10^11

The closest estimation to the federal debt of country C at the end of fiscal year 2004, $278,560,125,000, is 2.79x10^11.

To find the closest estimation to the federal debt of country C at the end of fiscal year 2004, we need to express the given amount in the form of single digits times an integer power of 10.

The given amount is $278,560,125,000. To express this amount in the desired form, we can round it to the nearest power of 10. The closest power of 10 to this amount is 10^11.

Rounding $278,560,125,000 to the nearest power of 10, we get approximately $2.79x10^11.

Therefore, the closest estimation to the federal debt of country C at the end of fiscal year 2004 is 2.79x10^11.

To estimate the closest value to $278,560,125,000 in the form of single digits times an integer power of 10, we need to first understand the place value of the number.

Looking at the number $278,560,125,000, we notice that the digit in the billions place is 2, the digit in the hundreds of billions place is 7, and the digit in the trillions place is 8. All the digits to the right of the trillions place are 0.

Now, based on this information, we can estimate the closest value in the desired form. Since the digit in the trillions place is 8, we know that the closest estimation will be in the tens of trillions place.

Therefore, the closest estimation in the requested form is 2.79x10^11.