1.2.(29 points)Suppose a user's linear data demand curve is described in the following. Ata price of $0/GB, the user would consume 60 GB each month, and at a price of $30/GB, theuser would not consume anything. Assume that the supply cost of the provider is $15/GB.Answer the following questions: Q1.2.1.(5 points)Plot the demand curve.Q1.2.2.(12 points)Consider the flat-rate pricing scheme and calculate the user con-sumption (in GB), utility, and surplus.Q1.2.3.(12 points)Consider the usage-based pricing scheme and calculate the userconsumption (in GB), utility, and surplus