Question

If an=3n-9,then a6is

Answer 1

Answer:

an = 3n - 9

a1 = 3(1) - 9 =3-9 = -6

a2 = 3(2)- 9 = 6-9 = -3

d = -3-(-6) = 3

a6 = a + 5d = -6 + 5(3) = -6 +15 = 9