If you are 29 years old, you have been alive for about 920,000,000 seconds. write this number in scientific notation.

When you write something in scientific notation, you essentially move the decimal point to make the number easier to work with.

920,000,000 = 9.2x10^8

The exponent of 8 means that when you move the decimal point in 9.2 over to the right 8 spaces, you get the full number.

I’m pretty sure the * means multiplication. so, if you multiply 5*1, it would equal 5. they are basically are-writing 5x1 as 5*1. so they would be… 5 10152025303540455055