Solve the system. 8x + 3y - z = 77 x - 2y + 8z = 15-7x + y + z = -38
A. {(7, 3, 8)}
B. {(7, 8, 3)}
C. ?
D. {(-7, 8, 14)}
Answer: B
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Evaluate the integral.
A. 
?
B. 
?
C. 
?2
D. 
?2
Write the objective function that describes the problem.An office manager needs to buy new filing cabinets. Cabinet A costs $5, takes up 5 square feet of floor space, and holds 7 cubic feet of files. Cabinet B costs $8, takes up 8 square feet, and holds 13 cubic feet. He has only $74 to spend and the office has room for no more than 74 square feet of cabinets. Let x equal the number of cabinet A's bought and y equal the number of cabinet B's bought.
A. z = 10x + 3y B. z = 3x + 10y C. z = 13x + 7y D. z = 7x + 13y
Write the rate as a fraction in simplest form.A biker goes 90 yards in 45 seconds.
A. 
B. 
C. 
D. 
The global environmental trend that will result in a sever shortage of workers is known as
A. the employment power shift B. a downside of nanotechnology C. repatriation D. outsourcing