Evaluate.
- 
A. - 
B. - 
C. 
D. 
Answer: C
Mathematics
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Graph the pair of parametric equations with the aid of a graphing calculator.x = 6 cos t + 2 cos 3t, y = 6 sin t - 2 sin3t, 0 ? t ? 2?
A. 
B. 
C. 
D. 
Mathematics
Sketch the graph and show all local extrema and inflection points.f(x) = x
4
A. Local maximum: 
Local minimum: (6, 0)
Inflection points: 
, (6, 0)
B. Local maximum: 
Local minimum: (6, 0)
Inflection points: 
C. Local minimum: (6, 0)
No inflection points
D. Local maximum: 
Local minimum: (6, 0)
Inflection point: 
Mathematics
The scores on a 30-point multiple-choice exam are given in the following frequency table:
The locator for the 80th percentile is
A. 22.5. B. 23. C. 22.2. D. 22.4. E. none of these
Mathematics
Simplify.
A. 18
B. 
C. 
D. 18x2
Mathematics