A large apartment building is to be built using modular con- struction techniques. The arrangement of apartments on any particular floor is to be chosen from one of three basic floor plans. Plan A has 18 apartments on one floor, including 3 three-bedroom units, 7 two-bedroom units, and 8 one- bedroom units. Each floor of plan B includes 4 three-bedroom units, 4 two-bedroom units, and 8 one-bedroom units. Each floor of plan C includes 5 three-bedroom units, 3 two-bedroom units, and 9 one-bedroom units. Suppose the building contains a total of x, floors of plan A, x2 floors of plan B, and x3 floors of plan C.

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Application of Linear Algebra

Construction Plan:
Question # 5:
A large apartment building is to be built using modular con-
struction techniques. The arrangement of apartments on any
particular floor is to be chosen from one of three basic floor
plans. Plan A has 18 apartments on one floor, including
3 three-bedroom units, 7 two-bedroom units, and 8 one-
bedroom units. Each floor of plan B includes 4 three-bedroom
units, 4 two-bedroom units, and 8 one-bedroom units. Each
floor of plan C includes 5 three-bedroom units, 3 two-bedroom
units, and 9 one-bedroom units. Suppose the building contains
a total of x, floors of plan A, x2 floors of plan B, and x3 floors
of plan C.
3
a. What interpretation can be given to the vector x 7 ?
8
b. Write a formal linear combination of vectors that expresses
the total numbers of three-, two-, and one-bedroom apart-
ments contained in the building.
c. [M] Is it possible to design the building with exactly 66
three-bedroom units, 74 two-bedroom units, and 136 one-
bedroom units? If so, is there more than one way to do it?
Explain your answer.
Transcribed Image Text:Construction Plan: Question # 5: A large apartment building is to be built using modular con- struction techniques. The arrangement of apartments on any particular floor is to be chosen from one of three basic floor plans. Plan A has 18 apartments on one floor, including 3 three-bedroom units, 7 two-bedroom units, and 8 one- bedroom units. Each floor of plan B includes 4 three-bedroom units, 4 two-bedroom units, and 8 one-bedroom units. Each floor of plan C includes 5 three-bedroom units, 3 two-bedroom units, and 9 one-bedroom units. Suppose the building contains a total of x, floors of plan A, x2 floors of plan B, and x3 floors of plan C. 3 a. What interpretation can be given to the vector x 7 ? 8 b. Write a formal linear combination of vectors that expresses the total numbers of three-, two-, and one-bedroom apart- ments contained in the building. c. [M] Is it possible to design the building with exactly 66 three-bedroom units, 74 two-bedroom units, and 136 one- bedroom units? If so, is there more than one way to do it? Explain your answer.
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