Coen, at the age of 5, decides that he wants to save his money to go to Disneyland when he's 10 years old. He needs to save a total of $1000. His parents (Coen's "bank") will pay 6.5% interest compounded weekly. How much weekly allowance must Coen put into his savings account in order to afford his Disneyland trip in5 years? Eight-year-old Cayce hears about his younger brother's Disneyland savings (from problem 23). He decides that he will invest his weekly allowance in the same type of account, through his parents, to save for a car. He wants to have a total of $4,000 by the time he's 16. What will his weekly payment need to be to reach his goal