the rate of change between 0 to 90 days is 2.74 i.e. 2.74 flies per day !
Explanation:
Here we have , Suppose that we began with 2 flies and after the 90 day (3 month) experiment, there were 248.000 flies. We need to find What is the rate of change between 0 to 90 days . Let's find out:
We know that for a function f(x) , rate of change of function over interval [a,b] :
⇒
![Rate = (f(b)-f(a))/(b-a)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/edel5wx1cngvv21g30j22l6u908eb8yacp.png)
Applying the same concept here with following parameters as :
[a,b] = [0,90]
![f(0)=2\\f(90)=248](https://img.qammunity.org/2021/formulas/mathematics/middle-school/wp5891y9onk9gq0dvj9v00cowahv7gzr0z.png)
⇒
![Rate = (f(90)-f(0))/(90-0)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/6b5l25bd4k8tclfx12j65vu42oym7r12qg.png)
⇒
![Rate = (248-2)/(90)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/ztd3pfuixqvn5rf6owtxfvmoxupc1ty1cu.png)
⇒
![Rate = (246)/(90)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/4uu207r3bq7x6hex2rwh1mar7qakjmnxu5.png)
⇒
![Rate = 2.74](https://img.qammunity.org/2021/formulas/mathematics/middle-school/m0wgc31g3lihfssa8n61on7f8xw5ddiknx.png)
Therefore , the rate of change between 0 to 90 days is 2.74 i.e. 2.74 flies per day !