Question

Which expression describes the rule of this sequence?

20, 40, 60, 80, 100........

Answer 1

x+20 since you add 20 each time

Answer 2

The sequence is 20 so yeah x+20

Answer 3

It is multiple choice

20 + n

20n

20^n

n + 20 + 20

Answer 4

The difference is d=20 ,so we add each number 20

Answer 5

A, 20 + n

Answer 6

An=20+(n-1)(20)=20-20+20n=20n

Answer 7

How is it 20+n if n is the term of the sequence?

Answer 8

Formula An=A1+(n-1)(d)

Answer 9

Thanks guys ^_^

Answer 10

np