Recent content by willywonka12345

Excellent, thanks so much for the help Dick. I like your way a whole lot better than the graph way !

I didn't divide the .8 into 12.8. This one comes out right : C(x) = 0.8(x-8)^2 + 2536 and then you kinda lost me as to finding the minimum cost.

Ahhhhhhhhh, that is what I am talking about. Didn't think of the standard form dealio. Thanks Dick. So C(x) = 0.8(x-6.4)^2 + 2559.04 , so the minimum you are saying would be 6.4 or 2559.04. I am thinking you are saying it is 6.4 because I believe you take the opposite sign of A in the ()...

and that's one of my weaknesses. So after looking at it again harder, I am getting something like x is around 8 and y is around 2548 but still am not sure as to what my answer is. 2548 dollars ?

Which would be 2600. Surely that's not right.

And then what. lol

No clue, we haven't got that far into the book. So that would tell me that it wouldn't be necessary to use that. But as before, still not sure. I wish you could help, I have a couple days to get the answer before returning to school so hopefully someone will know.

Homework Statement The cost associated with storing x units of a certain product is given by the function C(x) = 0.8x^2 - 12.8x + 2600 where C is measured in dollars and x in hundreds of units. What is the minimum cost ? The Attempt at a Solution Umm, yea. I would attempt it but I have no...

:redface: Sorry, Ok, I made it harder than it was I think, for the final answer you get : 3/(6a+2) :) ??

Thanks cristo ! I am checking it now. It works out :) Thanks for the tip.

Take half of three and multiply it by itself.

Quadratic in standard form help...please Homework Statement Write the quadratic function f(x) = x^2 + 3x + 2 in standard form. Homework Equations Standard form equation : f(x) = a(x-h)^2 + kThe Attempt at a Solution Ok, I think I got this one but am wanting to be sure. I set it up : (x^2...

Homework Statement For the function g(t) = 1/(3t-2) determine the average rate of change between the values t = 0 and t = a + 1 Homework Equations ARoC formula : f(b) - f(a) over b-a The Attempt at a Solution So I think I am doing it right but can only get so far and then get...

awesome ! thanks for the quick answer and for making it very easy to understand.

Hey everyone, so how would I even go about something that says for example :: Sketch the graph of the function: f(x) = {x^2 if x < -3 {x+12 if x >= -3 I'm not really sure what it wants, just like the graph for x^2, and x+12 ?, that's easy enough, but the "if" statements are...