Determine whether (f(g(x)) = x and whether (g (f(x)) = x.f(x) = x2 + 5 , g(x) = 
- 5
A. Yes, yes
B. No, no
C. No, yes
D. Yes, no
Answer: B
Mathematics
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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 = 18 - y2, x = y2, y = 0
A. 
?
B. 162?
C. 
?
D. 81?
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Solve the problem.Which of the following always produces an optimal schedule to the general scheduling problem?
A. The decreasing-time algorithm. B. The backflow algorithm. C. The critical-path algorithm. D. The brute-force algorithm. E. none of these
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Write the ratio as a fraction in simplest form.24 to 27
A. 
B. 
C. 
D. 3
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Perform the indicated operation. Write the answer in simplest form.
? 
? 4
A. 
B. 
C. 
D. 
Mathematics