Consider these 2 situations independently a) Jon's 29th birthday is today. He wants to have $4 million to be comfortable retiring in the lifestyle he has grown accustomed to. He currently has $1,730,000 in his investment account. His financial advisor says he can expect a 8% annual return. Assuming the financial advisor is right, how old would Jon be when he is ready to retire, assuming he makes no additional contributions or withdrawls. b) Erika's 25th birthday is today. Erika has $200,000 in investments and wants to have $400,000 to retire. Erika is determined to retire by her 40th birthday. What interest rate would Erika need to earn to be able to retire by her 40th birthday? Round to nearest full number.