Write the series in summation notation. Use the index i and let i begin at 1 in each summation.0 + 2 + 6 + 12 + 20
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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A computer password is made up of five characters. Each character can be a capital letter (A through Z) or a digit (0 through 9).How many different such computer passwords are there?
A. 36 × 5 B. 265 + 105 C. 536 D. 365 E. none of these
Mathematics
Simplify.-15 + 6 - 2 - (-1)
A. -10 B. -20 C. -8 D. -12
Mathematics
Provide an appropriate response.The equation y = x2 is satisfied by the points (2, 4) and (-2, 4). A horizontal line may be drawn between these two points. Is 
a function? Why or why not?
What will be an ideal response?
Mathematics
Graph the polar equation.r = 
A. 
B. 
C. 
D. 
Mathematics