Ineed with finding the average rate of change of the function between the indicated points.

To find the average rate of change, you would have to apply the formula , and our coordinates in this case are (10, -5) and (30,30). So first, we take the y-value of the second coordinate and subtract it with the y-value of the first coordinate.

This is the formula with the coordinates inserted :  and this would, in turn, make : . When we add 30 and 5 together, we get 35, and 30-10 is 20. This in fraction form is : .

Now, we simplify this further. Both numbers can be simplified with 5. This would have us end up with : . This, in decimal form, would be 1.75.

The average rate of change is 1.75.

13500

Step-by-step explanation:

0 hours = 6000

2 hours = 7800

Every hour, the bacteria increase by 900

15 x 900 = 13500