NEED ALL 4 ANSWERED

1. Give the formulas for the following:
the partial sum of a geometric sequence where a₁ is the first term, n is the number of the terms in the sum, and r is the common ratio.
the infinite sum of a geometric sequence where |r | < 1.

2. If you were offered a job would you choose the one with the pay increase according to an arithmetic sequence formula or a geometric sequence formula? Justify your response.

3. Give a real-life scenario that can be described by an arithmetic sequence.

4. Give a real-life scenario that can be described by a geometric sequence.