Which ones are arithmetic, geometric, or neither sequences?

1, 2 , 4 , 7
0, 2 , 4 , 6
-3, 0, 3, 6
6, 12, 24, 48
20, 22.5 ,25, 27.5
-4, 5, -6, 7
7, 9 , 12 , 14
18, 10 ,2 ,-6
100, 50, 25, 12.5
-1, 3, -9, 27

C

Step-by-step explanation: I GOT IT right on my exam 12th grade

my guess would be b and d, but i didn’t actually get out the pen and paper. lol

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: