For the Pair of Supply-And-Demand Equations, Where X Represents the Quantity

Multiple Choice

For the pair of supply-and-demand equations, where x represents the quantity demanded in units of 1,000 and p is the unit price in dollars, find the equilibrium quantity and the equilibrium price. 2x + 9p - 93 = 0 and 3x - 14p + 108 = 0

A) equilibrium quantity 6,000 units; equilibrium price $13
B) equilibrium quantity 12,000 units; equilibrium price $9
C) equilibrium quantity 6,000 units; equilibrium price $9
D) equilibrium quantity 12,000 units; equilibrium price $13