Question

Help!

Answer 1

well an easy method is to graph the curve... and look where a tangent to the curve would have a negative slope

Answer 2

the other is to use calculus to sketch the curve

Answer 3

You are looking for where f'(x) < 0

Take the first derivative and see where this occurs

Answer 4

Here is f'(x)
$$
f'(x)=(x-6) (x-2)
$$
When is this negative?

Answer 5

At 6 and 2?

Answer 6

BETWEEN 6 and 2, right?