Use Descartes' rule of signs to find the number of possible positive, negative, and nonreal roots for the following equation.4x7 + 9x2 + 5x + 10 = 0
A. 0 positive; 1 negative; 6 nonreal
B. 2 positive; 1 or 3 negative; 4 or 0 nonreal
C. 0 positive; 0 negative; 7 nonreal
D. 0 positive; 0 or 2 negative; 5 or 7 nonreal
E. none of these
Answer: E
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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 bounded by y = 3
, y = 3, and x = 0 about the line x = 1
A. 
?
B. 
?
C. 
?
D. 
?
Use the rational zeros theorem to determine the potential rational zeros of the polynomial function. Do not find the zeros.f(x) = -4x4 + 2x2 - 3x + 6
A. ± 
, ± 
, ± 
, ± 
, ± 1, ± 2, ± 3, ± 6
B. ± 
, ± 
, ± 
, ± 
, ± 1, ± 2, ± 3, ± 4, ± 6
C. ± 
, ± 
, ± 
, ± 
, ± 
, ± 1, ± 2, ± 3, ± 6
D. ± 
, ± 
, ± 
, ± 
, ± 
, ± 1, ± 2, ± 4
Points A, B, C and D are located on line l. Their corresponding coordinates are: A = -2.35, B = -.4, C = .7 and D = 3.25. Find each of the following distances:
(a) AC
(b) BD
(c) BC
(d) AD
Write the percent as a decimal.37% of students at a small college lived at home while attending classes.
A. 3.7 B. 37.0 C. 0.37 D. 0.037