If there are 31,556,952 seconds in one year, which of the following is the best estimate for the number seconds there are in eight years?

approximately 2,400,000 seconds

approximately 24,000,000 seconds

approximately 240,000,000 seconds

approximately 2,400,000,000 seconds

252,455,616 Seconds so round it all out and Voila

I think the best way to determine this is through the process of elimination.

We know that there are 31,556,952 seconds in a year. So anything below that should be eliminated.

We are left with:

240,000,000

2,400,000,000

Since 240,000,000 is far enough but not too far enough from the answer, it is safe to say that the answer is C.