A hockey team orders 12 wooden pedestals to mount their brass trophies on. The design of each pedestal is shown below. The team is charged $0.10 per cubic inch of wood. What is the total cost of the order, rounded to the nearest dollar?

What can you determine about the solutions of this system

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4