Grandfather Yarborough states that 10 years from today he will give you $500 if you provide him certain services. How much is $500 worth today? By using the formula F (1 + r)" Where P = present value, F = future value, r = discount rate, and n = number of years (10) it becomes a simple question of how to politely tell him no. Write a C++ program where F is $500, n is 10, and ris 6 percent (.06) to justify your answer that it is not worth the effort. Your present value output should be floating point. (See chapter 3 to output the present value using setprecision, showpoint, and fixed to display the present value with 2 digits after the decimal point, always showing). Make sure you use some words on your output so the user knows what he is looking at. Please do NOT use 1 letter variable names. This lab uses techniques learned in chapters 1, 2 and 3