Find the indicated probability.The following table show the results of a clinical trial for an allergy drug. 
What is the probability that a randomly selected person was given a placebo or improved? Round your answer to the nearest thousandth when necessary.
A. 0.942
B. 0.69
C. 0.772
D. 0.17
Answer: C
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Give the numerical coefficient of the term.-9y11
A. 9 B. 11 C. y11 D. -9
Solve the problem.The number of mosquitoes M(x), in millions, in a certain area depends on the June rainfall x, in inches, according to the equation 
What rainfall produces the maximum number of mosquitoes?
A. 6 in. B. 36 in. C. 3 in. D. 0 in.
Solve by completing the square.x2 + 8x = 5
A. 4 + 
B. -4 ± 2
C. -4 ± 
D. -1 ± 
For those which are polynomial functions, find the degree, the leading term, and the leading coefficient.f(x) = 7x4 + 6x2
A. Degree: 4, leading term: 7x4, leading coefficient: 7 B. Degree: 7, leading term: x4, leading coefficient: 7 C. Degree: 4, leading term: 7, leading coefficient: 7x4 D. Degree: 2, leading term: 7x4, leading coefficient: 7