The demand equation for the TI-83 graphing calculator is $x+3 p -690=0$, where $x$ is the quantity demanded per week and $p$ is the wholesale unit price in dollars. The supply equation is $x-20 p+805=0$, where $x$ is the quantity the supplier will make available in the market each week when the wholesale price is $p$ dollars each. Find the equilibrium quantity and the equilibrium price for the calculators.
Equilibrium quantity=
Equilibrium price=