Sarah is watching a video online that is 246.987 seconds long. She writes this time in expanded form. Which expression represents the value of one of the digits in the length of the video?

Sarah is watching a video online that is 4.7 minutes long.

Step-by-step explanation:

As we know 60 sec = 1 minute

⇒60×4 sec = 1×4 minutes

⇒240 sec = 4 minutes

⇒246.987 ≈ 247

                  = 240 + 7 seconds

                  = 4 minutes 7 seconds

                  = 4.7 minutes

∴ we get

Sarah is watching a video online that is 4.7 minutes long.