To start saving for retirement, Keith opens an RRSP that earns interest at a rate of 4.2% compounded quarterly. Keith makes deposits of $430 at the end of every quarter for eleven years. At the end of the eleven years, Keith switches his deposits to $240 at the end of every month for 17 years. Please include a well-labelled timeline diagram. Full solutions should be shown on separate sheets of paper. Submit your solutions. a. How much money does Keith have in this RRSP at the end of the 28 years? Round to the nearest cent b. How much interest did Keith's RRSP earn