Question

Delta Properties builds houses. They have two models, Economy and Deluxe. The cost to build depends on the square footage of the house and the size of the lot. Of course, the house and lot for the Deluxe model are larger than those for the Economy model. The size of the house and the lot size for each model is given in the table below, in number of square feet Size of Building 2200 3500 Size of Lot 6000 9000 Economy Model Deluxe Model The next table gives Delta's cost per square foot to build a house and to buy a lot, in dollars Building Cost、Lot Cost 300 150 The size and cost information is summarized in the following matrices: 9000 | С 300 150 2200 6000 a. Compute the product SC. Preview b. What is the (2, 1)-entry of matrix SC? Preview c. What does the (2, 1)-entry of matrix (SC) mean? Select an answer Select an answer The total cost for the economy model. The cost of the lot for the economy model. The cost of the building for deluxe model. The total cost for the deluxe model.

Answer 1

Solution Given ho Gooo 3500 9o00 300 150 C)i i50 3500 OOD 3500 (300) + 9000(150) 660,000 900,000 1050,000 135o,00o Q, 4o0,30b (sal rla, 400,300 The (,1)-entay of mtatx Sc means the total cost of the building f02 deluxe mndel. →。 --> option -Q)