Question 584959
the quadratic formula will give you the solution(s)


for ax^2 + bx + c = 0 ___ x = {{{(-b +- sqrt(b^2 - 4ac))/(2a)}}}


for P = 5 ___ -x^2 + 110x - 1000 = 5 ___ -x^2 + 110x - 1005 = 0


the ± before the square root usually results in two solutions


this graph is a downward opening parabola, with the axis of symmetry at x = 55
___ the P value of the "nose" (vertex) of the parabola can be found by plugging in 55 for x