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

5 - 15 + 45 - 135 + ...

A.summation of five times three to the power of the quantity n plus one from n equals zero to infinity

B.summation of five times negative three to the power of n from n equals zero to infinity

C. summation of five times three to the power of n from n equals zero to infinity

D. summation of five times negative three to the power of the quantity n plus one from n equals zero to infinity

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

-9 - 3 + 3 + 9 + ... + 81

A. summation of the quantity negative nine plus six n from n equals zero to fifteen

B. summation of negative fifty four times n from n equals zero to fifteen

C. summation of negative fifty four times n from n equals zero to infinity

D. summation of the quantity negative nine plus six n from n equals zero to infinity

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

64 + 81 + 100 + 121 + ... + n2 + ...

A. summation of n squared from n equals eight to infinity

B. summation of n minus one squared from n equals eight to infinity

C. summation of n squared from n equals nine to infinity

D. summation of n plus one squared from n equals eight to infinity

4. Find the sum of the arithmetic sequence.

17, 19, 21, 23, ..., 35

A. 260

B. 179

C. 37

D. 160

5. Find the sum of the geometric sequence.

1, one divided by two, one divided by four, one divided by eight, one divided by sixteen

A. one divided by twelve

B. 93

C. negative one divided by forty eight

D. thirty one divided by sixteen

6. An auditorium has 30 rows with 10 seats in the first row, 12 in the second row, 14 in the third row, and so forth. How many seats are in the auditorium?

A. 1170

B. 735

C. 1230

D. 600