Future value with periodic rates. Matt Johnson delivers newspapers and is putting away $$$$50$ at the end of each quarter from his paper route collections. Matt is $11$ years old and will use the money when he goes to college in $7$ years. What will be the value of$$ Matt's account in $7$ years with his quarterly payments if he is earning $6\mathrm{.}5\%($APR$),10\%($APR$),$ or $15\%($APR$)?$