The table below shows some inputs and outputs of the invertible function f with domain all real numbers.
2
f(z)
5
9
3
-2
1
-5
18 0
-1 1
9
11
Find the following values:
f(f(58)) =
f(f(5)) =

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2