![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
Find the sound travel in water and air.
\ \First find the sound travel in water.
\The linear function is y = 1440x
\![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f427cfdba526714686d6c9aae5ae4ea2.png\")
(Substitute 5 for x)
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=cb515b66afdf9fb14e78bcd9666672b8.png\")
(Multiply: ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=489829bb75b6d1b0bb82beb84763a47e.png\")
)
The sound travel 7200 meters in underwater.![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
Next find the sound travel in air.
\The linear function is y = 343x
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=653a512ac065f1e34efe6a97dae5559d.png\")
(Substitute 5 for x)
y = 1715 (Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=810ed126534fe0f6f8044be486661ec4.png\")
)
The sound travel 1715 meters in air.
\Compare the values, sound travels faster in underwater.![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
Sound travels faster in underwater.