Answer:
Explanation:
The given sequence : 2.5,7.5,22.5,67.5,202.5
here first term (a)= 2.5
Second term = 7.5
Third term = 22.5 and so on
The difference between the two consecutive terms is increasing but have common ratio as:
Common ratio (r) =
So this sequence follows geometric progression.
nth term in GP =
Required function notation:
i.e. the function notation of given sequence :