Roberta has $10,540 to invest. she plans to invest her money in certificates of deposit (cds) that have 2.1% interest a stock portfolio that makes 25%interest, and a savings account that has 1.5% interest she would like to make s231.69 in annual interest from her investments. also, to provide somerisk security, she wants to invest a third of the amount she puts in the stock portfolio in the savings account. let x be the amount invested in cds y bethe amount invested in the stock portfolio, and z be the amount invested in the savings account. what is the amount roberta invests in each type ofinvestment? the amount invested in cds (x) is $the amount invested in the stock portfolio (y) is $the amount invested in the savings account (z) is $