Answer:
89
Step-by-step explanation:
8, 13,
8+13= 21
13+21 =34
21+34=55
34+55=89
the second value is ten times higher then the refference one
the answer is A
Given function
To find an inverse for any given function, which is of the form , always swap and in the equation and try to get the form . Now, swapping back and , we get the inverse function.
On swapping and , we get
Swapping back and , we get
This is the inverse function.