Question

Write an equation for the nth term of the arithmetic sequence

2,4,6,8,...

Answer 1

Explanation:

dn means the difference (meaning what do you add/subtract to get the next number)

T0 means the term before the first one you got.

Tn = dn + T0

Tn = 2n + 0

Therefore our equation will be

Tn = 2n

Or in your case

An= 2n