This is an introductory spreadsheet problem to allow you to become familiar with using Excel functions to solve single-factor problems. The development of correct functions is the primary goal of working it. The statement and question may be similar to or an extension of previous problems. A solar-powered personal aircraft with VTOL capability has been under development for the past 30 years by a group of engineers and physicists. SPPAV, as the plane will be termed, is expected to be available for its final test flight in exactly 3 years from now. Over the previous 30 years, a total of $100 million has been spent in its development. Assuming the $100 million was spent in an equal amount each year (the NCF for each year =$100 million /30 ), and assuming an interest rate of 10%, determine the following: (a) The value of the total investment now, after the 30 years. (b) The value of the total investment at the expected time of the final test flight in three more years, assuming the same amount is spent for each of the next three years. (c) The value of the total investment at the expected time of the final test flight in three more years, assuming that twice the amount is spent for each of the next 3 years than that for the previous 30 years