A food server examines the amount of money
earned in tips after working an 8-hour shift. The server
has a total of $95 in denominations of $1, $5, $10,
and $20 bills. The total number of paper bills is 26.
The number of $5 bills is 4 times the number of $10
bills, and the number of $1 bills is 1 less than twice the
number of $5 bills. Write a system of linear equations
to represent the situation. Then use matrices to find the
number of each denomination.
