To find the total number of seconds the playlist will play, we need to multiply the number of songs (1,900) by the average time per song (3.5 minutes) and convert it to seconds.

1 minute = 60 seconds

So, the total number of seconds can be calculated as follows:

Therefore, the total number of seconds the playlist will play is 3.99×10^5 seconds.

Question

The answer above was posted in response to the following question.

Kendra finds the dimensions of a sticky note. She uses a meter stick to determine that the dimensions are 1.25×10^−8 meters wide by 2.5×10^−6 meters long. Use scientific notation to write the dimensions in millimeters.