Your office needs to deliver products to various sites in your town. You can hire a firm to make those deliveries for $200 per m
onth plus mileage of 50 cents per mile based on an average of 1200 miles per month. Or you can lease a truck for $350 per month and pay the related expenses. You estimate that the related expenses for gas, insurance and other are $480 per month. Which would be the best deal, contracting or leasing? How much would you save in a year?
a. Contracting, $30
b. Leasing, $30
c. Contracting, $360
d. Leasing, $360
You should find that your system doesn't have solutions. This is also confirmed by the fact that the determinant of the matrix of the coefficient of the variables x, y and z is equal to zero.
