Please answer question 49, both segments a and b.

49. Investment One safe investment pays 8% per year, and a more risky investment pays 12% per year. a. How much must be invested in each account if the investor of $100,000 would like a return of $9000 per year? b. Why might the investor use two accounts rather than put all money in the 12% investment? 50. Investment A woman invests $52,000 in two differ