+3°C
an increase in temperature is denoted by +
- 7 + 10 = +3C
I think the answer is -44n+2
It's a computation. It would be 8!/3!(8-3)! If my memory serves me correctly.
Answer: f(n+1) = 3 f(n)
Step-by-step explanation:
- A recursive formula is used to determine each term of a sequence using preceding term or terms.
Given sequence : 2.5, 7.5, 22.5, 67.5, 202.5,...
Here,

Common ratio = 3
Let f(n) be a term in this sequence then the next term will be f(n+1) = 3 f(n), where n is a natural number .
Required recursive formula : f(n+1) = 3 f(n)