Question

There were 235 wolves. after year there were 320. how many will there be after 8 years?

Answer 1

830

Explanation:

You can use the formula `a_n=a_1 +(n-1)d.`
`n` stands for the term number (8).
d stands for the difference

The difference between 235 and 320 is 85. You find this by subtracting 235 from 320 (320-235=85).

So now, we have `d`. `d = 85` and `n = 8`

`a_1 = 235` because it is the starting number

Our formula now looks like this:
`a_8 = 235 + (8-1) xx85`

You then solve by first subtracting (8-1).

`a_8 = 235 + (7)(85)`

You then multiply 7 and 85

`a_8 = 235 + 595`

Once you add those, you then find your answers..

`a_8 = 830`