a submarine started the day at 1200 feet below sea level. the submarine rose 60 feet per hour during a 3-hour
period
which expression represents the new position of the submarine in relation to sea level?
-1.200 – 3(60)
-1,200 + 3(60)
1,200 - 3(60)
1,200 + 3(-60)

1,200 +3(60)

Step-by-step explanation:

1200 is where they started so every three hour period the submarine rises 60 ft per hour. So you multiply it by this and then 60. Positive because you are rising, and not going down.

-1200+ 3(60)

Step-by-step explanation:

it b on the test

step-by-step explanation:

mean or average is 40.6