Question

Math question

Answer 1

@Michele_Laino it is D right?

Answer 2

@Michele_Laino

Answer 3

@Michele_Laino

Answer 4

first derivative is:
\[f'\left( x \right) = 5{\left( { - x + 4} \right)^4}\]
which is always positive, and it is nequal zero at \(x=4\), so what can you conclude?

Answer 5

equal*

Answer 6

I think that it is not option D.

Answer 7

since your function is always an increasing function