I NEED HELP!!!!!

Question

I NEED HELP!!!!!

anonymous · Answer

attachment

michele_laino · Answer

please you have to maximaze the function  p(x), in other words you have to calculate the derivative of p(x) and the solve the equation:
$$\frac{ dp }{ dx }=0$$

michele_laino · Answer

please, write the derivative of p(x), namely dp/dx

michele_laino · Answer

@omgitsjc

michele_laino · Answer

$$\frac{ dp }{ dx }=-20x+200$$
is it right?

michele_laino · Answer

@omgitsjc  Please, note that I can not say you the answer directly, since the code of conduct. Nevertheless I can help you in your reasoning!

anonymous · Answer

Sorry, The cable guy came and i walk off.

anonymous · Answer

and @Michele_Laino i dont know.

michele_laino · Answer

now, please set -20x+200=0, and find x, write your answer, please!

anonymous · Answer

ok.. HOw do i find x.. Is it 10?

michele_laino · Answer

that's right!

michele_laino · Answer

now insert x=10, into the function p(x), then calculate it, and write what you get, please!

michele_laino · Answer

namely calculate p(10) @omgitsjc

anonymous · Answer

oh... Ok, just dumb it down a bit.

anonymous · Answer

so do i do -20*10+200=0?

michele_laino · Answer

noo, please you have to do this:
$$-10*(10)^{2}+200*10-250=-10*100+2000-250=...$$

michele_laino · Answer

so, please, what do you got?

anonymous · Answer

ok that first one was 2750 and the second half was 850

anonymous · Answer

I get the felling i needed or need to do something more

michele_laino · Answer

from preceeding calculus the result is 750, are you agree?

anonymous · Answer

yes, i think so

michele_laino · Answer

ok! then x=10 and p(x)=750 is your answer, namely the third option

michele_laino · Answer

that's all

anonymous · Answer

wow! Thx, and sorry for walking away before.

michele_laino · Answer

don't worry, thank you!