Country Day's scholarship fund receives a gift of $ 145000. The money is invested in stocks, bonds, and CDs. CDs pay 5.25 % interest, bonds pay 2.5 % interest, and stocks pay 8.4 % interest. Country day invests $ 65000 more in bonds than in CDs. If the annual income from the investments is $ 6987.5 , how much was invested in each vehicle?

Set up and solve a system of equations by writing it as an augmented matrix and using the RREF function on your calculator or Desmos to reduce the matrix.

Country Day invested $       in stocks. 

Country Day invested $       in bonds. 

Country Day invested $       in CDs.