Graph the parabola described.Vertex at (0, 0); Directrix the line x = -3

A.


B.


C.


D.



Answer: D

Mathematics

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Solve the problem.A cancer patient undergoing chemotherapy is injected with a particular drug. The function  gives the number of milligrams D of this drug that is in the patient's bloodstream h hours after the drug has been administered. How many milligrams of the drug were injected? To the nearest milligram, how much of the drug will be present after 2 hours?

Fill in the blank(s) with the appropriate word(s).

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Find the domain of the rational function.h(x) = 

A. {x|x ? 0} B. all real numbers C. {x|x ? 7} D. {x|x ? -7}

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Use the power rule and the power of a product or quotient rule to simplify the expression. 3 

A.
B. - 
C. - 
D. - 

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Solve the problem.The logistic growth model  represents the population of a bacterium in a culture tube after t hours. What was the initial amount of bacteria in the population?

A. 46 B. 50 C. 45 D. 44

Mathematics