Answer:
a is the correct option.
Step-by-step explanation:
We have been given the population model is 
Here x represents number of weeks and f(x) is population of frog after x weeks.
For x= 6, we have

It means that the population after 6 weeks is 960.
Hence, f(6)=960 represents the population after 6 weeks.
a is the correct option.
Answer:
What do you want to solve for? x or y
Step-by-step explanation:
I do not see a graph but the graph should increase very quickly with exponential growth as the population is doubling
1. rational
2. irrational
3. rational
4. irrational