Set up a system of linear equations to represent the scenario. Solve the system by using Gaussian elimination or Gauss-Jordan elimination. Assume the interest rates are annual. Nicole borrowed to buy a truck for her business. She borrowed from her parents who charge her simple interest. She borrowed from a credit union that charges simple interest, and she borrowed from a bank that charges simple interest. She borrowed six times as much from her parents as from the bank, and the amount of interest she paid at the end of was . How much did she borrow from each source?