Here is the question: The following chart shows the growth of a crowd at a rally over a 3 h period.
- Time (in hours): $ 0.0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0 $
- Number of people: $0 , 176, 245, 388, 402, 432, 415$
a) Determine the average rate of change in the size of the crowd for each half hour of the rally
b) What do these numbers represent?
So with this question I should be able to use $\Delta f(x)/\Delta x= (f(x_2) - f(x_1))/(x_2-x_1)$ as my formula to solve this. However, I am not sure since there is not a given interval like most other questions I have done. In this case it tells you that it is over a 3 hour period and it wants the Average rate of change for each 1/2 hour.