Solve the problem.The amount of alcohol in the bloodstream, A, declines at a rate proportional to the amount, that is, . If  for a particular person, how long will it take for his alcohol concentration to decrease from 0.10% to 0.05%? Give your answer to the nearest tenth of an hour.

A. 0.2 hr
B. 4.6 hr
C. 2.3 hr
D. 3.5 hr


Answer: C

Mathematics

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Provide an appropriate response.Find the direction in which the function is increasing most rapidly at the point P0.f(x, y) = xy2 - yx2, P0(-1, 1)

A.  i +  j
B.  i +  j
C.  i -  j
D.  i -  j

Mathematics

Assuming that p represents a false statement and q represents a true statement, determine the truth value of the following.~(p ? ~q)

A. True B. False

Mathematics

The total weekly revenue (in dollars) of Country Workshop associated with manufacturing and selling their rolltop desks is given by the function

? ? where x denotes the number of finished units and y denotes the number of unfinished units manufactured and sold each week. Compute and  when x = 200 and y = 180. Interpret your results. ? A. -$380/unit;  -$20/unitThe weekly revenue decreases by $380/unit for each additional finished desk produced (beyond 200) when the level of production of unfinished desks remains fixed at 180; the revenue decreases by $20/unit when each additional unfinished desk (beyond 180) is produced and the level of production of finished desks remains fixed at 200.? B. $36/unit;  $24/unitThe weekly revenue increases by $36/unit for each additional finished desk produced (beyond 200) when the level of production of unfinished desks remains fixed at 180; the revenue increases by $24/unit when each additional unfinished desk (beyond 180) is produced and the level of production of finished desks remains fixed at 200.? C. $36/unit;  -$24/unitThe weekly revenue increases by $36/unit for each additional finished desk produced (beyond 200) when the level of production of unfinished desks remains fixed at 180; the revenue decreases by $24/unit when each additional unfinished desk (beyond 180) is produced and the level of production of finished desks remains fixed at 200.? D. $24/unit;  $36/unitThe weekly revenue increases by $36/unit for each additional finished desk produced (beyond 200) when the level of production of unfinished desks remains fixed at 180; the revenue decreases by $24/unit when each additional unfinished desk (beyond 180) is produced and the level of production of finished desks remains fixed at 200.?

Mathematics

Solve the equation.9x4 - 10x2 + 1 = 0

A. -1, - , 1
B. -1, - , 1
C. - 
D. - 

Mathematics