Answer:
displacement = 75 km
Step-by-step explanation:
the distance from final to initial point gives the displacement
displacement = 120 - 45
Answer:

Step-by-step explanation:
÷ 
×
= 
The answer is A: 5
Any answer with 0 doesn't work because then the denominator would be 0 as well, and negative 5 does not make the numerator equal to 0.