Question

The expression - 330 + 18x represents a submarine that began at a depth of 330 feet below sea level

and ascended at a rate of 18 feet per minute. What was the depth of the submarine after 5 minutes?
Select the correct answer below and, if necessary, fill in the answer box to complete your choice.

Answer 1

-240 feet

Explanation:

ok so x is the amount of minutes in this case, so if its 18 feet per minute and its 5 minutes, so 18 x 5. that's 90. then ya add the 90 to the -330, which -240.