Answer:
9
Step-by-step explanation:
Here,
f(1) = 1,
f(n) = 3f(n-1),
f(4)= 3×1(4-1)
= 3×3
=9
Π - Irrational
Square Root of 16 - Rational
Negative Square Root of 17- Irrational
-48.39 - Rational
-97.97 Repeating - Rational
The answer is C. Hope this helps :)
