Write the sum using summation notation, assuming the suggested pattern continues. 4 - 24 + 144 - 864 + .

Write the sum using summation notation, assuming the suggested pattern continues. 

4 - 24 + 144 - 864 + ...

a)

infinity

n

infinity

n

c)

infinity

n-1

d)

infinity

n+1

Write the sum using summation notation, assuming the suggested pattern continues. 

-3 + 6 + 15 + 24 + ... + 132

a)

infinity

15

c)

infinity

d)

15

Write the sum using summation notation, assuming the suggested pattern continues. 

343 + 512 + 729 + 1000 + ... + n3

a)

infinity

3

infinity

3

c)

infinity

3

d)

infinity

3

Find the sum of the arithmetic sequence. 

5, 7, 9, 11, ..., 23