The graph shows the calling charges of two cell phone companies. At how many minutes do the two companies charge the same amount? Α. Ο
B. 15
C. 20
D 4

The answer would be C

Step-by-step explanation:

The two lines intersect on (20, 6) so that means that the charging rates were the same when on that point. And since it is asking for how many minutes they charge at the same amount, that would make it 20.

answer

the correct answer is

explanation

the given function is

the excluded values are obtained by solving:

we factor to obtain:

the excluded values are

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