Question

A submarine descends from sea level to the entrance of an underwater cave. The elevation of the entrance is -120 feet. The rate of change in the submarine's elevation is no greater than -12 feet per second. Can the submarine reach the entrance to the cave in less than 10 seconds? Explain the inequality
THANK YOU!!
10 * -12 = -120
I did see this answer, but how is this written as an inequality type of expression?
Thank you!

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