Question

When is a sequence geometric

Answer 1

when each term is multipled by the same number to get the next number

Explanation:

`\text{A geometric sequence:}\\\\a_1,\ a_2,\ a_3,\ a_4,\ ....\\\\(a_2)/(a_1)=(a_3)/(a_2)=(a_4)/(a_3)=...=(a_n)/(a_(n-1))=r=constant\\\\r-\text{common ratio}\\\\a_2=a_1r\\a_3=a_2r\\a_4=a_3r\\\vdots\\a_n=a_(n-1)r\\\\\text{next term is created from the previous one by multiplying it}\\\text{by the same number}`

Answer 2

I also think its A cause you find the next term when your multiply the constant (common ratio) so it makes sense for it to be A