Question

Which recursive formula generalizes the given sequence?
{3, 7, 11, 15, 19, ...}
A an = (an- 1) - 4
B an = 2(an- 1) + 1
C an = (an- 1) +4
D an= 4(an-1) - 5

Answer 1

Hmmmm

Answer 2

look at it

Answer 3

a0,a0+4
3,7

Answer 4

the previous term keeps getting added +4 so

Answer 5

i know its not A but i don't know which one it is. I have been looking at this question for 30 minutes and i have to show my work also.

Answer 6

k lets say a1=3

Answer 7

as u can see
a2=a1+4

Answer 8

a3=a2+4

Answer 9

a4=a3+4

Answer 10

a1=3,a2=7,a3=11,a4=15,...

Answer 11

that n-1 is a subscript that might be confusing

Answer 12

/[A_n=A_{n-1}+4/]

Answer 13

yeah that part is confusing me

Answer 14

its saying the term u want is the term before + 4

Answer 15

the nth term = the (n-1)th term +4

Answer 16

I'm still really confused, would the answer be C then??

Answer 17

Is C correct??