Question

When is a sequence geometric

Answer 1

Answer:

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

Step-by-step explanation:

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

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