NEED HELP!!!!!

Which of these sequences is a geometric sequence?

A. 1, 2, 4, 7, 11, 16, 22, …

B. 2, 4, 8, 14, 22, 38, …

C. 3, 6, 9, 12, 15, 18, 21, …

D. 3, 9, 27, 81, 343, 729, …

Question

NEED HELP!!!!!

Which of these sequences is a geometric sequence?




A. 1, 2, 4, 7, 11, 16, 22, …




B. 2, 4, 8, 14, 22, 38, …




C. 3, 6, 9, 12, 15, 18, 21, …




D. 3, 9, 27, 81, 343, 729, …

mehek14 · Answer

which one do you think?

anonymous · Answer

c

mehek14 · Answer

it is not C because they are not being multiplied by the same number
$3*2 = 6\ 6*1.5 = 9$ 
and so on

mehek14 · Answer

a geometric sequence is where each term after the first is found by multiplying the previous one by the same number

anonymous · Answer

A! RIGHT

mehek14 · Answer

$1*2=2\2*2=4\4*2=8~not~7$

mehek14 · Answer

the pattern in A is
$1+1=2\2+2=4\4+3=7\7+4=11$

anonymous · Answer

d!! new I should of whent with my gut

mehek14 · Answer

yes D
they increase by $*3$ each time

anonymous · Answer

thx I have more questions though can you help me with them

mehek14 · Answer

sure post separately

anonymous · Answer

k