Create an explicit equation for each recursively defined sequence below:

Part A

This is an arithmetic sequence with starting term a(1) = 17 and common difference d = -7.

a(n) = a(1) + d(n-1)

a(n) = 17 + (-7)(n-1)

a(n) = 17-7(n-1)

a(n) = 17-7n+7

Part B

We have a geometric sequence here because we multiply by the same quantity (5) each time. This makes the common ratio be r = 5.

The starting term is t1 = 3

The nth term of this geometric sequence can be expressed as...

t(n) = t1*(r)^(n-1)

`1234567890-=/*-qwertyuiop[]asdfghjkl; '\\zxcvbnm,./+ /