Question

The table below shows the distance d(t) in feet that an object travels in t seconds.. . . t . (second). d(t) . (feet). 3. 126. 4. 224. 5. 350. 6. 504. . . What is the average rate of change of d(t) between 3 seconds and 5 seconds and what does it represent?

Answer 1

on the assignment the answer is D

Answer 2

The table and the numbers might be a little intimidating but this is actually just a speed-distance-time problem. When we say average rate, we mean average speed, in this case. 

Here is the solution: 

$average speed = \frac{350-126}{5-3} = 112 \frac{ft}{s}$

This represents the average speed of the system. If we plot the table, the speed represents the slope of the line.