Suppose that you are the vice president of operations of a manufacturing firm that sells an industrial lubricant in a competitive market. Further suppose that your economist gives you the following supply and demand​ functions: ​Demand: Upper Q Superscript Upper D ​= 45 minus 2 Upper P ​Supply: Upper Q Superscript Upper S ​= negative 15 plus Upper P. What is the consumer surplus in this​ market? Consumer surplus is ​$ 20.25. ​ (Enter your response rounded to two decimal​ places.)