Evaluate (f o f) (x) when f (x) = 4x-3 and g (x) = 5 - x^2

f (x) = 4x-3

Step 1: Replace all 'x' values with f (x) in the equation.

f (f (x)) = 4 (4x-3) - 3

Step 2: Multiply the brackets and simplify.

16x-12-3

=16x-15

Step 3: Rewrite in the form of f (f (x)).

f (f (x)) = 16x-15