RCC System of Linear Equations Using Gaussian Elimination Question

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.
Ali borrowed $18,500 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 7% simple interest, and he borrowed from a bank that charges 5% simple interest. He
borrowed six times as much from his parents as from the bank, and the amount of interest he paid at the end of 1 yr was $895.
How much did he borrow from each source?
Ali borrowed $
from his parents, $
from the credit union, and $
from the bank.
Set up a system of linear equations to represent the scenario. Solve the system by using Gaussian elimination or Gauss-Jordan
elimination.
Ben stayed in three different cities (Washington, D.C., Atlanta, Georgia, and Dallas, Texas) for a total of 11 nights. He spent twice
as many nights in Dallas as he did in Washington. The total cost for 11 nights (excluding tax) was $1520. Determine the number
of nights that he spent in each city.
City Cost per Night
Washington $250
Atlanta
$ 100
Dallas
$130
Ben spent
night(s) in Washington,
night(s) in Atlanta, and
night(s) in Dallas.