Question

Below are five number sequences. Which ones are geometric sequences?Check all that apply. A., , 1, , , ... B.2, 3, 5, 9, 17, ... C.3, -15, 75, -375, 1875, ... D., , , , , ... E.3, -15, -33, -51, -69

Answer 1

for each sequence, divide each term by the term before it. you should get the same result r for each sequence in order for it to be geometric

for example: for sequence E, divide -15/3, then -33/15, etc. and see if you get the same answer each time