The table below show the amount of water that is in a bathtub that is being filled (1,12) (2,17) (3, 22) (4,27).

Which of the following function could model the amount of gallon of water, f(x) that the bathtub will contain after x minute of being filled?

1. f(x)=5x+12

2.f(x)=7x+5

3.f(x)=5x+7

4.f(x)=12x+5

I would say f(x)=5x+7 because the y-values are going up by 5 each time, so to find the y-intercept you need to subtract 5 from 12 and you get 7. The third answer is the only one that has 7 as a y-intercept.

Step-by-step explanation:

1. 3.4/4

2. 0.8/7

3. 0.5 x 3

4. 0.9 x 6

5. 10.8

6. 2.35

7. 0.567

8. 9.35

9. 0.02

10. 0.06

11. 0.16

12. 0.42

13. 0.63

14. 5.6

15. 8.1

16. 9.9

17. 0.28

18. 0.48

19. 0.27

20. 0.49

21. 0.45

22. 0.72

23. 0.9

24. 0.88

25. 0.75

26. 0.16

27. 0.328

28. 0.495

29. 0.72

30. 1.068