hello I need help on a quiz

Math 7 B Unit 4: Graphing in the Coordinate Plane
can someone give me the answers or just some help ;-;

2 answers

1) 1,3
2,6
3,12
4,18
6,30

2)porportinal $50 per month

3)1,2 2,4 4,8 6,12 (the graph with this cordinates)

4) 20/25
Just trust me about this one