Answer the following questions. Show your solution. 1) The first term of an arithmetic sequence is equal to 200 and the common difference is equal to -10. Find the value of 20th term. 2) An arithmetic...

Answer the following questions. Show your solution.

1) The first term of an arithmetic sequence is equal to 200 and the common difference is equal to -10. Find the value of 20th term.

2) An arithmetic sequence has a common difference equal to 10 and its 6th term is equal to 52. Find the 15th term.

3) Write down the 8th term in the Geometric Progression 1,3,9 ...

4) Find the number of terms in the geometric  progression 6,12,24 ..., 1536

5) Find the 10th term of the arithmetic progression 1, 3.5, 6, 8.5,...