Question 125192
-200P+35,000=-P^2+400P-20,000
P^2-400P-200P+35,000+20,000=0
P^2-600P+55,000=0
USING THE QUADRATIC EQUATION WE GET:{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
P=(600+-SQRT[-600^2-4*1*55,000])/2*1
P=(600+-SQRT[360,000-220,000])/2
P=(600+-SQRT140,000)/2
P=(600+-374.166)/2
P=(600+374.166)/2
P=487 ANSWER.
P=(600-374.166)/2
P=225.8/2
P=112.9 ANSWER.