Question

The table below lists the time and elevation of a submarine as it dives towards the ocean floor. Homework Help
Time (minutes)
Elevation (meters)
10
-150
30
-450
60
-900
90
-1350
120
-1800
a. Why is the elevation given as a negative number?
b. What happens to the elevation of the submarine as the time increases?
c. Using the pattern in the table, what is the elevation of the submarine after 3 hours? After 45 minutes? After 0 minutes?

1. thienan
Based on the fact that this elevation relates to a submarine, the elevation is given as a negative number because it is below sea level.
The elevation of the submarine decreases as time increases.
Going by the pattern in the table, the elevation of the submarine after:
• 3 hours  ⇒ -2,700 meters
• 45 minutes  ⇒ -675 meters
• 0 minutes  ⇒ 0 meters

### What is the rate of change for the submarine?

The rate of change for the submarine can be found as:
= Change in elevation / change in minutes
= (-450 – (-150)) / (30 – 10)
= -300 / 20
= -15 meters per minute
This means that for every minute that passes, the submarine’s elevation will decrease because the submarine is going below sea level.
After 3 hours therefore, the elevation is:
= -15 x (3 hours x 60 minutes per hour)
= -2,700 meters
After 45 minutes:
= -15 x 45
= -675 meters
After 0 minutes:
= -15 x 0
= 0 meters or sea level
Find out more on being below sea level at https://brainly.com/question/2092614
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