Question

The expression -350 +16.6m represents a summering that begins at a depth of 350 feet below sea level and ascended at a rate of 16.6 ft./min. what was the depth of the submarine after nine minutes 

Answer 1

Explanation:

After nine minutes, the depth of the submarine will be -334.4 ft. below sea level. This is calculated by taking the starting depth of -350 ft. and adding the amount of ascent in nine minutes (9 minutes x 16.6 ft./min. = 149.4 ft.). So the result would be -350 + 149.4 = -334.4 ft.