Suppose you have been hired by a research firm trying to understand the market for Widgets (a hypothetical product). Your analysis of the data indicates that the Demand curve for Widgets is estimated to be linear and given by equation Qd = 150 - 3P and the Supply curve for Widgets appears to be linear as well and is estimated as Qs = 2P - 20. GRAPH answer

The firm that hired you projects that changes in consumer demographics will cause the Demand curve to change to Qd = 180 - 3P. add this to graph