Question

200,40,8,1 3/5 in explicit form

Answer 1

200 * 1/5 = 40

40* 1/5 = 8

8* 1/5 = 8/5

The series is geometric with common ratio 1/5.

The nth term for a geometric sequence is a_n = a_1 *(1/5) ^ (n-1)
where a_1 = 200.

a_n = 200* (1/5) ^ (n-1) which is the explicit or nth term.

If you burnish that nth term with some algebra, you will see that it can also be written
as a_n = 8 * 5 ^(3 - n) .

@banegirl84