SOLUTION: The profit on a watch is given by P = x^2 – 5x – 9 and where x is the number of watches sold per day. How many watches were sold on a day when there was a $15 loss?
Algebra.Com
Question 193801: The profit on a watch is given by P = x^2 – 5x – 9 and where x is the number of watches sold per day. How many watches were sold on a day when there was a $15 loss?
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
The profit on a watch is given by P = x^2 – 5x – 9 and where x is the number of watches sold per day. How many watches were sold on a day when there was a $15 loss?
.
Simply set P to -15 and solve for x:
P = x^2 – 5x – 9
15 = x^2 – 5x – 9
0 = x^2 – 5x – 24
0 = (x-8)(x+3)
x = {-3, 8}
.
Toss out the negative solution leaving:
x = 8
RELATED QUESTIONS
Thr profit on a watch is given by P=p^2-13x-80, where x is the number of watches sold per (answered by elima)
The profit on a watch is given by P = x^2 – 13x – 80, where x is the number of
watches... (answered by Fombitz)
The profit on a watch is given by {{{P = x^2 – 13x – 80}}}, where {{{x}}} is the number... (answered by benbjlin,josmiceli,tangitehewagen)
The profit on a watch is given by P = x2 – 13x – 80 and where x is the number of watches... (answered by jojo14344,Mathtut)
The profit on a watch is given by P=x^2-13x-80 and where x is the number of watches sold... (answered by nerdybill)
The profit on a watch is given by P=x^2-5x-9 and where x is the number of watches sold... (answered by checkley77)
The profit on a watch is given by P = X2 – 13 X – 80, where X is the number of watches... (answered by 303795)
The profit on a watch is given by P = x2 – 13x – 80, where x is the number of watches... (answered by asha)
The profit on a watch is given by P = x2 – 13x – 80, where x is the number of watches... (answered by checkley75,ankor@dixie-net.com)