Find the cardinal number of the indicated set. Use the cardinal number formula.If n(A) = 40, n(B) = 117 and n(A ? B) = 137, what is n(A ? B)?
A. 10
B. 60
C. 22
D. 20
Answer: D
Mathematics
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Evaluate the integral.
A. -10 B. 0 C. 5 D. 10
Mathematics
Solve the problem.At one college, GPAs are normally distributed with a mean of 2.6 and a standard deviation of 0.6. What percentage of students at the college have a GPA between 2 and 3.2?
A. 47.5% B. 84% C. 95% D. 68%
Mathematics
Simplify completely.
A. 
B. 
C. 
D. 
Mathematics
Use the shell method to find the volume of the solid generated by revolving the region bounded by the given curves and lines about the x-axis.x = 
ey2, y = 0, x = 0, y = 1
A. ?(e - 1)
B. 3?(e - 1)
C. 
(e - 1)
D. 
?e
Mathematics