Question

A certain arithmetic sequence has the following explicit formula for the nth term:
an = 4 + (n - 1)(7)
The same sequence has the following recursive formula:
an = an-1 + _____
What number belongs in the blank space in the recursive formula?
A. 4
B. 7
C. 28
D. 3

Answer 1

@welshfella

Answer 2

this number is the common difference, d.

Answer 3

i thought it was b

Answer 4

what is the common difference of the sequence, based on your formula
\(\large\color{black}{ \displaystyle a_{n}=4+(n-1)(7) }\)

Answer 5

?

Answer 6

7

Answer 7

iright

Answer 8

yws, d=7.

Answer 9

your answer is corrrrrrrrect

Answer 10

ook thx