Question

encontre o termo geral: a1=3 e r=4

Answer 1

an = a1 + (n-1)r
an = 3 + (n-1)4
an = 3 + 4n-4
an = 4n - 1

Answer 2

resolução!

an = a1 + ( n - 1 ) r

an = 3 + ( n - 1 ) 4

an = 3 + 4n - 1

an = 4n - 1