Supply & Demand
posted by Steff .
42) Given the demand equation 3 + p 40=0 and the supply equation 2x  p + 10=0, where p is the unit price in dollars and x represents the quantity in units of a thousand, determine the equilibrium quantity and the equilibrium price.

Equilibrium point is where the curves meet, or
D: 3x + p 40=0
S: 2x  p + 10=0
Solve for x and p to get:
x=6, p=22, i.e.
Equilibrium point is at
price =22, and x=6 (thousands). 
Thanks. Was having difficulty setting up equation. Finally got right answer.

You're welcome!