Answer:
The maximum number of mosquitoes is 7
Explanation:
Given
![m(x)= x^2 + 14x](https://img.qammunity.org/2021/formulas/mathematics/high-school/t8jd66gyym5and9usyf3tt8mfb288lou5q.png)
Required
Determine the maximum number of the function
First, we differentiate the given function w.r.t x
![m'(x) = -2x + 14](https://img.qammunity.org/2021/formulas/mathematics/high-school/macitws60pkihv4alx1d9rd805grlrsx62.png)
Then, we equate m'(x) to 0
![0 = -2x + 14](https://img.qammunity.org/2021/formulas/mathematics/high-school/oszb9nv4df4uqu0vfs5ih8z1764laa40sy.png)
Lastly, we solve for x
![0 = -2x + 14](https://img.qammunity.org/2021/formulas/mathematics/high-school/oszb9nv4df4uqu0vfs5ih8z1764laa40sy.png)
Make 2x the subject
![2x = 14](https://img.qammunity.org/2021/formulas/mathematics/middle-school/8t264buzzpwhhwwcvnq9wabx6qn0bqwkiu.png)
Make x the subject
![x = 14/2](https://img.qammunity.org/2021/formulas/mathematics/high-school/6op5i8hjyhn1rmtv6hxerva97f7g4ge9hp.png)
![x = 7](https://img.qammunity.org/2021/formulas/mathematics/middle-school/haui06dyzu06cccqprdnwfvnybjm6zc7di.png)