Identify the interval that is not equal to the other three?

15-19
30-34
40-45
45-49

40-45

Step-by-step explanation:

The rest equal -4, 40-55 is -5.

40-45 is the interval not equal to the other three!

Step-by-step explanation:

15-19=-4

30-34=-4

40-45=-5

45-49=-4

40-45=-5 while the others equal -4

what i would say the best answer is a. 40.5