15,200,000 in scientific notation

Scientifict notation is (number greater than or equal to 1 and less than 10) times 10^x

count where the decima place would make the number less than 10 and more than or equal to 1

7 places

so move the decimal place to the left 7 places and put that as the x

1.52 times 10^7 is the answer

15,200,000 in scientific notation is 1.52x10^7