I can help you if you mark me as braì LG
Answer:
Option a
Step-by-step explanation:
Lets verify
RHS
![\\ \rm\longmapsto x(x^2-3)](https://tex.z-dn.net/?f=%5C%5C%20%5Crm%5Clongmapsto%20x%28x%5E2-3%29)
- Use distributive law
- a(b-c)=ab-bc
![\\ \rm\longmapsto x(x^2)-3x](https://tex.z-dn.net/?f=%5C%5C%20%5Crm%5Clongmapsto%20x%28x%5E2%29-3x)
![\\ \rm\longmapsto x^3-3x](https://tex.z-dn.net/?f=%5C%5C%20%5Crm%5Clongmapsto%20x%5E3-3x)
![\\ \rm\longmapsto LHS](https://tex.z-dn.net/?f=%5C%5C%20%5Crm%5Clongmapsto%20LHS)
Hence verifed
The answer is 2300 because the climbing rate is 100 bacteria per hour. so times 100 and 13 and u get 1300 and u have to add that to the a 1000