Solve the problem.What is the range of the cosine function?
A. all real numbers
B. all real numbers greater than or equal to 0
C. all real numbers greater than or equal to 1 or less than or equal to -1
D. all real numbers from -1 to 1, inclusive
Answer: D
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Write a system of two inequalities that describe the constraints in the problem.An office manager needs to buy new filing cabinets. Cabinet A costs $6, 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 14 cubic feet. He has only $66 to spend and the office has room for no more than 59 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. 6y + 8x ? 66, 5y + 8x ? 59 B. 7x + 14y ? 59, 59x + 66y ? 8 C. 6x + 8y ? 66, 5x + 8y ? 59 D. 7y + 14x ? 59, 59y + 66x ? 8
Solve.log5 
= x
A. -2
B. 2
C. 
D. 
Use a calculator to approximate the square root. Round to three decimal places.
A. 70.000 B. 8.364 C. 8.367 D. 8.372
Which of the following conditions DOES NOT increase the bargaining power of buyers?
A. Buyers purchase a relatively large portion of the selling firm's output B. Buyers can switch to another product with no switching costs C. Buyers pose a credible threat to pursue backward vertical integration D. Buyers purchase a relatively small amount of the selling firm's output