Leigh is one year away from retirement and is concerned that the social security system will be abolished this year. leigh would like to have an annual income of $50,000 during retirement. how much does leigh need to have invested at 3% to assure that annual income?

Which (if any) of the following scenarios is the result of a natural monopoly? instructions: you may select more than one answer. a. patent holders of genetically modified seeds are permitted to sue farmers who save seeds from one planting season to the next. b. doctors in the united states are prohibited from practicing without a medical license. c. there is one train operator with service from baltimore to philadelphia. d. coal is used as the primary energy in a country with abundant coal deposits.