Question 88161
The equilibrium price is where supply = demand.  


D=-5p+40
S=-p^2+30p-8


{{{-5p+40=-p^2+30p-8}}}

{{{p^2-30p+8-5p+40=0}}}
{{{p^2-35p+48=0}}}


Use either the quadratic formula or a graphing calculator:
p=1.43   or   p = 33.57


R^2