I need help with this question

Answer:
-55.5
Step-by-step explanation:
There are 4 spaces between -56 and -54 (2 units), so each space represents 2/4 = 1/2 = 0.5 unit. The markings increase as you go upward, so the value at the dot, 1 space above -56, is ...
-56 +0.5 = -55.5