Find the mean, variance, and standard deviation of the following frequency distribution.
Score
Frequency
20
7
25
4
28
5
30
4
What will be an ideal response?
Mean 
, variance 
, 
Mathematics
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Evaluate the integral.
A. 2
+ C
B. 
+ C
C. 2
+ C
D. 
+ C
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Write this word statement as an equation. Use x as the variable, and find all solutions from the set 
The sum of a number and 1 is 9.
A. x + 1 = 9; 8 B. x = 1 + 9 ; 10 C. x + 9 = 1; 8 D. x + 1 = 9; 9
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Factor completely. If the polynomial is prime, state so.8m3 + 343n9
A. (2m + 7n3)(4m2 + 14mn3 + 49n6) B. (2m - 7n2)(4m2 + 14m2n3 + 49n6) C. (2m + 7n3)(4m2 - 14mn3 + 49n6) D. (2m + 7n2)(4m2 - 14m2n2 + 49n3)
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Sketch a graph of f.f(x) = (x + 6)2
A. 
B. 
C. 
D. 
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