Match the sequence {an} on the left with the value of a4 on the right. Drag and drop application. an = n + 3 an =n+ 3 drop zone empty. an = 2n + 1 an = 2n+ 1 drop zone empty. an = 3n - 3 an =3n - 3 drop zone empty. an = 2n - 8 an= 2n- 8 drop zone empty. an = n2 - n an =n2-n drop zone empty. 3 9 12 8 7