Basically what is happening is:
You start out with 15. That 1st week you have 22% more than 15, or in other words 15*1.22. The following week you have 22% more than 22% more of 15, which is 15*1.22*1.22.
Now we can write a function that models this situation:
f(n): number of views
n: number of weeks since you started
f(n) = 15(1.22^n)
We want to find out how many views there are after four weeks, so plug 4 in for n.
f(4) = 15(1.22^4)
f(4) = 33.23
This means after 4 weeks you can expect the video to have 33 views.
1/2 times 1/2 times 1/2 is 1/8
Probability of head times the probability of head times the probability of head
So 1/8
It would be T divided by 5. If Jeffery read a book essentially 1/5 of the size of Toby's book then T divided by 5 would have to be the answer.
