Question 1126044
{{{ P(800) = -.002*800^2 + 4.7*800 - 2200 }}}
{{{ P(800) = -.002* 640000 + 3760 - 2200 }}}
{{{ P(800) = -1280 + 3760 - 2200 }}}
{{{ P(800) = 280 }}}
(a) $280 profit
(b)
{{{ x[max] }}} is at {{{ -b/(2a) }}}
{{{ a = -.002 }}}
{{{ b = 4.7 }}}
{{{ x[max] = -4.7/(2*(-.002)) }}}
{{{ x[max] = 1175 }}}
1,175 donuts daily to maximize profit