Jim's music Library on his phone holds 1,900 songs. The songs have an average time of 3.5 minutes. Use scientific notation to find the total number of seconds the playlists will play. Express the answer to the exact decimal place.

To find the total number of seconds Jim's music Library will play, we need to multiply the number of songs by the average time per song in minutes and convert it to seconds.

Total time in seconds = (number of songs) * (average time per song) * (60 seconds/minute)

Total time in seconds = 1900 * 3.5 * 60

Total time in seconds = 399,000 seconds

In scientific notation, we express this as 3.99 x 10^5 seconds.