Question

ALGEBRA!!!!

6,13,20,27,34

Write an explicit formula?

an=

Write a recursive formula?

an=
a1=

Answer 1

you might notice there is a common difference

Answer 2

for example what are the following equal to:
13-6=?
20-13=?
27-20=?
34-27=?

Answer 3

7

Answer 4

right
and we know arithmetic sequences have this form:
\[a_n=a_1+d(n-1)\]
this an explicit form

Answer 5

for a recursive form notice term-previous term=common difference