Find the cumulative distribution function for the given probability density function.f(x) = 
x1/2; [1, 9]
A. F(x) = 
, 1 ? x ? 9
B. F(x) = 
, 1 ? x ? 9
C. F(x) = 
, 1 ? x ? 9
D. F(x) = 
, 1 ? x ? 9
Answer: A
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Evaluate the integral by using multiple substitutions.
dx
A. 
sin6 (x3 - 7x)+ C
B. 2 sin6 (x3 - 7x) + C
C. 
cos6 (3x2) + C
D. 15 sin4 (x3 - 7x) + C
Find the mean for the given frequency distribution.Find the approximate mean for the grouped frequency distribution. Use the class midpoint to represent each class. Round your answer to two decimal places.
A. 78.12 B. 77.83 C. 74.50 D. 79.50
Multiply and simplify any radicals in your answer. Assume that all variables represent positive real numbers.
A. 2
B. 
C. 2
D. 
Find an equation in slope-intercept form of the line satisfying the specified conditions.Through (3, 3), perpendicular to -8x + 7y = -31
A. y = - 
x + 
B. y = 
x + 
C. y = - 
x - 
D. y = 
x - 