Last year, Elsa had $20,000 to invest. She invested some of it in an account that paid 9% simple interest per year, and she invested the rest in an account that paid 8% simple interest per year. After one year, she received a total of $1690 in interest. How much did she invest in each account? Note that the ALEKS graphing calculator can be used to make computations easier. First account: 3D Second account: $D