Refer to a normal distribution described by the following figure. The mean is ? and the standard deviation is ?.
The standard deviation ? =
A. 8
B. 4
C. 10
D. 2
E. none of these
Answer: A
Mathematics
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Simplify.
A. 
B. 
C. 
D. 
Mathematics
Which graph represents the function?
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Find f[g(x)] and g[f(x)].f(x) = 
; g(x) = 5x2 + 8
A. f[g(x)] = 
g[f(x)] = 5(x - 4)2 + 8
B. f[g(x)] = 
g[f(x)] = 5x - 12
C. f[g(x)] = 5x - 12
g[f(x)] = 
D. f[g(x)] = 
- 4
g[f(x)] = 5x + 4
Mathematics
Solve the problem.Lynn invests $225 each quarter in a fixed-interest mutual fund paying annual interest of 8% compounded quarterly. How much will her account have in it at the end of 7 years? Round to the nearest dollar.
A. $8466 B. $25,071 C. $2008 D. $8337
Mathematics