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Please help! 15 Points.

1. Write the general term and pattern rule for the following pattern:
9, 6, 3, 0, -3

Then: Find the 15th, 25th, and 100th term values.


2. Write the general term and pattern rule for the following patterns: -7, -17, -27, -37, -47

Then: Find the 15th, 25th, and 100th term values.