Question

Find the common difference and recursive formula

Answer 1

3)

The first term is 35 and it keeps getting subtracted by 30 to get the other terms so this is the common difference, so we can write:


`\sf a_n = a_(n-1)-30`

`\sf a_1=35`

4)

The first term is 5 and it keeps getting subtracted by 8 to get the other terms so this is the common difference, so we can write:


`\sf a_n = a_(n-1)-8`

`\sf a_1=5`

5)

The first term is -29 and it keeps getting added by 200 to get the other terms so this is the common difference, so we can write:


`\sf a_n = a_(n-1)+200`

`\sf a_1=-29`

6)

The first term is 11 and it keeps getting added by 100 to get the other terms so this is the common difference, so we can write:


`\sf a_n = a_(n-1)+100`

`\sf a_1=11`

7)

The first term is 37 and it keeps getting added by 30 to get the other terms so this is the common difference, so we can write:


`\sf a_n = a_(n-1)+30`

`\sf a_1=37`

8)

The first term is 20 and it keeps getting subtracted by 6 to get the other terms so this is the common difference, so we can write:


`\sf a_n = a_(n-1)-6`

`\sf a_1=20`