Jordan works in a science lab where he is studying the behavior of a certain unstable isotope. he has 240 milligrams of the sample, and the amount of the substance remaining in the sample decreases at a rate of 8% each day. after t days, there are less than 115 milligrams of the substance remaining. which inequality represents this situation, and after how many days will the amount of the sample be less than 115 milligrams?

After 8.82 days the amount of substance is less than 115 milligrams

Step-by-step explanation:

If x (t) represents the amount of substance in the sample after t days. So

with

Where Pt is the amount of substance in the sample on day t.

Then x (t) can be written as:

After t days there are less than 115 milligrams of the substance, then:

x (t) <115

 This is the inequality that the situation represents.

Now we clear t.

After 8.82 days the amount of substance is less than 115 milligrams

a. she will receive a refund of $278.

step-by-step explanation:

6. 104

7. 52/37

8. 2704

9. 140608

10. -52

11. |52|=52

12. 1/52

13. 156

14. 26

15. 40

16. 37

17. -364

18. 53 1/3

19. 50.96

20. 43 2/3

21. 78

22. 50.75

23. 47.63

24. 163.28

25. 10400

26. 338

27. 208

28. 2704 square inches

29. 312 square meters

30. don't know what its asking, tell me so i can tell you

31. 8490.56

32. 52 degrees would be an acute angle

33. 128 degrees

34. 20.8

35. 39

36. 208