Use the Following General Linear Demand Relation $Q _ { d } = 100 - 5 P + 0.004 M - 5 P _ { R }$

Multiple Choice

Use the following general linear demand relation: $Q _ { d } = 100 - 5 P + 0.004 M - 5 P _ { R }$ where P is the price of good X,M is income,and $P _ { R}$ is the price of a related good,R.Income is $100,000,the price of the related good is $20,and the supply function is Q_s = 150 + 5P.What is the equilibrium price?

A) $30
B) $25
C) $40
D) $35
E) $50