Solve. The FDA approves a new drug and has confirmed by independent research that the strength of the reaction to the drug is given by the expression 
where d is the dosage of the drug and ? is a constant. Factor this expression.
A. 
(? - d)
B. d2
C. 
D. d2
Answer: D
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The graph of a function f is given. Use the graph to answer the question.For what numbers x is f(x) < 0?
A. (-3, 3.5) B. [-5, -3), (3.5, 5) C. (-?, -3) D. (-3, ?)
In electronics, the formula 
is called Ohm's law. It gives the relationship in a circuit between the voltage V (in volts), the current I (in amperes), and the resistance R (in ohms).
?
Find V when 
amperes and 
ohms.
?
A. 
volts
B. 
volts
C. 
volts
D. 
volts
E. 
volts
Find the center and radius of the circle and sketch its graph.(x - 5)2 + (y - 4)2 = 4
A. (h, k) = (-5, 4), r = 2
B. (h, k) = (5, -4), r = 2
C. (h, k) = (5, 4), r = 2
D. (h, k) = (-5, -4), r = 2
Find the probability.A bag contains 2 red marbles, 7 blue marbles, and 3 green marbles. What is the probability of choosing a blue marble when one marble is drawn?
A. 
B. 
C. 
D. 