Respuesta :
This is an arithmetic sequence, since it's pattern is +4.
n1 = 1
d = 4
n = 1 + (n-1)(4) <-------------- This is the formula for the nth term of the sequence.
The pattern is going up by 4 so you take away 4
1-4=-3
The nth term = 4n-3
1-4=-3
The nth term = 4n-3