Find the average rate of change of the function from $$x _ { 1 } \text { to } x _ { 2 }$$
-A deep sea diving bell is being lowered at a constant rate. After 12 minutes, the bell is at a depth of 400 ft. After 45 minutes the bell is at a depth of 1900 ft. What is the average rate of lowering per minute? Round to the nearest hundredth is needed.
A) 45.5 ft per minute
B) 0.02 ft per minute
C) 33.3 ft per minute
D) 42.2 ft per minute

Question

Quizplus · Accepted Answer

The average rate of change is calculated by dividing the change in depth by the change in time. From 400 ft to 1900 ft is a change of 1500 ft (1900 - 400), and from 12 minutes to 45 minutes is a change of 33 minutes (45 - 12). So, the average rate of lowering is 1500 ft / 33 minutes = 45.45 ft per minute, which rounds to 45.5 ft per minute.

Find the Average Rate of Change of the Function From x