A set of exam scores is 80, 75, 85, 90, 100, 70, 60. The standard deviation equals
A. 
B. 7
C. 
D. 
E. none of these
Answer: E
Mathematics
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Sketch the graph and show all local extrema and inflection points.y = ex - 4e-x - 5x
A. Local minimum (2, -2)
No inflection point
B. Local maximum (0, -3)
Local minimum (ln 4, 3 - 5 ln 4)
No inflection point
C. Local maximum (0, -3)
Local minimum (ln 4, 3 - 5 ln 4)
Inflection point (
ln 4, - 
ln 4)
D. Local minimum (
ln 4, - 
ln 4)
No inflection point
Mathematics
Use identities to fill in the blank with the appropriate trigonometric function name.cot 65° = 
A. sec B. csc C. cot D. tan
Mathematics
Provide an appropriate response.List the following quantities in order from the smallest to the largest. 
What will be an ideal response?
Mathematics
Multiply.8 ? 803
A. 664 B. 6424 C. 6640 D. 88
Mathematics