Math question!!! please help!! this could be easy for you! help?

Question

What's the next 3 numbers? and what's the rule?

1. 12, 16, 23, 33,_,_,_ what's the rule?

2. 8, 24, 72, 216, _,_,_ what's the rule?

3. 256, 128, 64, 32, _,_,_ what's the rule?

4. 4, 32, 256, 2048, _,_,_ what's the rule?

5. 5,10 ,20 ,40, _,_,_ what's the rule?

6. 4, 12, 6, 108 ,_,_,_ what's the rule?

7. 7, 49, 343, 2401, _,_,_ what's the rule?

8. 729, 243, 81, 27, _,_,_ what's the rule?

Answer 1

1. y=x+2

2. y=3x

3. y=.5x

4. y=8x

5.y=2x

6.no clue

7.y=x squared

8.y=x/3

Answer 2

8) looks like the powers of three backwards...9, 3, root 3

3 and 7 are also powers

Answer 3

1. 12,16,23,33,36,41,58   +4 +7 +10 goes up by 3

2. 8,24,72,216,648,1944,5832   multiply by 3

3. 256,128,64,32,16,8,4   divide by 2

4. 4,32,256,2048,16384,131072,1048576 multiply by 8

5. 5,10,20,40,80,160,320   multiply by 2

6. 4,12,36,108,324,972,2916   multiply by 3

7. 7,49,343,2401,16807,117649,823543 mult. by 7

8. 729,243,81,27,9,3,1   divide by 3