28) solve using marrices: (plz also show steps with explanation)

28) Solve using Matrices (plz provide steps with explanation)

28) Jenny receives $1270 per year from three different investments totaling $20,000. One of the investments pays 6%, the second one pays 8%, and the third one pays 5%. If the money invested at 8% is $1500 less than the amount invested at 5%, how much money has Jenny invested in the investment that pays 6%? For y