Find the probability.A lottery game has balls numbered 1 through 19. What is the probability of selecting an even numbered ball or a 12?
A. 
B. 9
C. 
D. 
Answer: A
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Compute and simplify the difference quotient 
, h ? 0.f(x) = 
A. - 
B. 
C. - 
D. - 
Find the midpoint of the line segment whose end points are given.(4, 7) and (7, -6)
A. (11, 1)
B. (-3, 13)
C. (
, 
)
D. (- 
, 
)
Provide an appropriate response.The set of grades from different classes is recorded. In the first class, the mean is 80 and the standard deviation is 2. In the second class, the mean is 70 and the standard deviation is 5. In the third class, the mean is 72 and the standard deviation is 4. In which class does it appear that a student is most likely to receive a grade of 90 or higher?
A. First class B. Second class C. Third class
Write out the first five terms of the sequence.{sn} = 
A. s1= -2, s2= 1, s3= 
, s4= - 
, s5= 
B. s1= 2, s2= - 1, s3= 
, s4= - 
, s5= 
C. s1= -2, s2= 1, s3= - 
, s4= 
, s5= - 
D. s1= 2, s2= 1, s3= 
, s4= 
, s5= 