Write the first six terms of the sequence.
a1 = 4, an = An-1 +5

{4, 9, 14, 19, 24}

Step-by-step explanation:

Best to use the notation a(1) = 4, a(n) = a(n-1) + 5.

a(1) = 4  (given)

a(2) = 9  (here we found a(2) by adding the common difference, 5, to a(1)

a(3) = 14

a(4) =  19

a(5) = 24

add an image

step-by-step explanation:

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3