The Purplemath Forums

Hello, My wife went back to school and is taking Algebra. I haven't been to school in years and am trying to help her, I'm not looking for the answers, but to be reminded of the steps to do the math so that I can in turn show her how. The original problem is at the bottom. If I remember correctly, P...

Hi Buddy, Thanks for the replies My answer for the reasonable part is that it is not reasonable, because the more products you make, the more your profit decreases. With volume your profit should increase, not decrease. 40 items equal $5865, 50 items equals $5667 . I will work on your other suggesti...

i don't know what you mean by "convert the numbers to standard equation". try plugging this into the quadratic formula. then pick "reasonable" rounded answers (like "i can't make 2.65 units, but I can 2 or 3 units" kind of thing) This is what I have for 4 although I do...

I've been trying for the past 10 minutes to upload my equations and the forum keeps giving me an sql error, so I'm going to try a screen capture of the values I worked out, sorry for any inconvenience. http://img441.imageshack.us/img441/8082/mathproblem1.jpg http://img38.imageshack.us/img38/7456/mat...

So is the below correct? How do you work with the decimal portion? (The forum doesn't allow me to use the square root symbol or the squared symbol without a sql database error, so I had to use a V and a ^2 instead) 0 = -3.2(x)^2 + 268.2(x) -5166 a = 3.2 b = 268.2 c = -5166 __________________________...

I just had an epiphany. Can I simplify the problem more than this? 0 = -3.2(x)^2 + 268.2(x) -5166 0 = (-3.2(x)^2 + 268.2(x) -5166) 10 or 0 = 32x^2 + 2682 - 51660 a = 32 b = 2682 c = -51660 ____________________________________________ x = -2682 ± V(2682)^2 - 4(32)(-51660) ----------------------------...

Can someone point me in the right direction for this problem? 6. Show a graph of the profit equation. Be sure to label the horizontal and vertical axes. • Label the y-intercept with an ordered pair of numbers. Explain these values in the context of the problem. • Label both x-intercepts with ordered...

How does this answer look? 6. Show a graph of the profit equation. Be sure to label the horizontal and vertical axes. • Label the y-intercept with an ordered pair of numbers. Explain these values in the context of the problem. • Label both x-intercepts with ordered pairs of numbers, approximating va...