On what interval/s is the following function decreasing? (use interval notation. round answers to 2 decimal places.) m(x) = 4x^3 - 5x^2 - 7x explain how you do it, you!

You are given the function

1. Find the derivative m'(x):

2. Find stationary points, solving the equation m'(x)=0:

3. Determine the signs of derivative:

Thus, function is decreasing for  

10 b/c 5*2 =10

step-by-step explanation:

really your just stupid if you don't know this

step-by-step explanation: