Question

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

Answer 1

920,000,000
= 9.2 x 10^8

Answer 2

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.