Graph each function. Use the graph to determine the domain and range.f(x) = - 
x2 
A. Domain: [- 
, ?)
Range: (-?, 0]
B. Domain: (-?, ?)
Range: (-?, ?)
C. Domain: (-?, ?)
Range: [0, ?)
D. Domain: (-?, ?)
Range: (-?, 0]
Answer: D
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Solve the problem.The function A = A0e-0.00693x models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. If 800 pounds of the material are initially put into the vault, how many pounds will be left after 160 years?
A. 519 pounds B. 250 pounds C. 640 pounds D. 264 pounds
Solve the problem.A manufacturer contracts to mint coins for the federal government. How much variation dr in the radius of the coins can be tolerated if the coins are to weigh within 1/10 of their ideal weight? Assume that the thickness does not vary.
A. 0.10% B. 10% C. 5.0% D. 0.050%
A top management team that is made up of people with very similar backgrounds and experience is considered to be
A. a heterogeneous team B. a homogeneous team C. more common in the United States than in Japan D. a bad idea because they take too long to reach consensus
Solve the problem.The profit that the vendor makes per day by selling x pretzels is given by the function 
Find the number of pretzels that must be sold to maximize profit.
A. 1.6 pretzels B. 490 pretzels C. 400 pretzels D. 800 pretzels