Final answer:
The next number in the sequence is -34, found by adding 5 to the previous number in the pattern which increases by 5 each time.
Step-by-step explanation:
The sequence presented is -54, -49, -44, -39, and we're tasked with identifying the next number in this sequence. By observing the pattern, we can see that the difference between subsequent numbers is +5; each number is 5 greater than the precedent.
Therefore, the next number in the sequence will be -39 + 5 = -34.