Find the open interval(s) where the function is changing as requested.Increasing; y = x4 - 18x2 + 81
A. (-3, 3)
B. (-3, 0)
C. (-3, 0), (3, ?)
D. (-?, 0)
Answer: C
Mathematics
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Find the volume of the solid generated by revolving the region about the given axis. Use the shell or washer method.The region in the first quadrant bounded by x = 3y - y2 and the y-axis about the line x = -1
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Solve.logx1024 = 5
A. 4 B. 4 or -4 C. 5 or -5 D. 5
Mathematics
Use synthetic division to divide.
?
?
A. 
B. 
C. ?
D. 
E. 
Mathematics
Suppose the graph shows a manufacturer's total revenue, in thousands of dollars, from the sale of x cellular telephones to dealers. Is the marginal revenue greater at 800 cell phones or at 1000?
?
?
A. 800 B. 1000
Mathematics