Question 98694
a=.02 b=-3.4 c=150
minimum at x= -b/2a=3.4/(2*.02)=85 bars
minimum of y=a*x^2+b*x+c=.02*85^2+-3.4*85+150=144.5-289+150=$5.50
Ed
{{{graph(500,500,-10,150,-1,9,.02x^2-3.4x+150)}}}