Question

Help i have attached a file

Answer 1

because the rule can be either x2; 1x2=2;2x2=4;4x2=8

or +1;+2;+3;+4...
1+1=2;2+2=4;4+3=7;...

Answer 2

Explanation:

the next term could be 7

1+1=2

2+2=4

4+3=7

the common difference increases with 1

the next could also be 8 because,

1 x 2=2

2x2 = 4

4x 2 =8

the common ratio is 2