Determine The Sum Of The Following And Show Your Complete Solution., 1. The First 15 Terms Of The Arithmetic Sequence 3, 8, 13, 18, 23, 2026, 2.The First 2

Determine the sum of the following and show your complete solution.

1. The first 15 terms of the arithmetic sequence 3, 8, 13, 18, 23, …

2.The first 21 terms of the arithmetic sequence 1, 8, 15, 22, …

 

Answer:

Step-by-step explanation: