Answer:
1.25
See the attached image for explanation
Step-by-step explanation:
Aiden's target weight is represented by zero mark on the number line.
Yesterday, Aiden's weight was 0.25 below the target weight that is represented by -0.25 mark.
Today, Aiden's weight was changed by 1.5 from yesterday
change = 1.5 - 0.25 = 1.25
Aiden's weight today is represented by 1.25 mark on the number line.