Question

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 playlist will play. Express the answer to the exact decimal place.(1 point)
Responses

3.99×103
seconds
3.99 times 10 cubed seconds

3.99×104
seconds
3.99 times 10 superscript 4 baseline seconds

3.99×105
seconds
3.99 times 10 superscript 5 baseline seconds

0.399×106
seconds

Answer 1

Each song = 3.5 min = 3.5×60 = 210 s.
Total = 1900×210 = 399,000 s = 3.99×10^5 seconds.

Answer: 3.99×10^5 seconds.