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. Keith borrowed $17,000 to buy a truck for his business. He borrowed from his parents who charge him 4% simple interest. He borrowed from a credit union that charges 5% simple interest, and he borrowed from a bank that charges 2% simple interest. He borrowed five times as much from his parents as from the bank, and the amount of interest he paid at the end of 1 yr was $690. How much did he borrow from each source? Keith borrowed $ from his parents, $ from the credit union, and $ bank. from the