Can someone help me with this please

Answer:
2.55
Step-by-step explanation:
Calculate T at 1200 m and 3750 m, that is
T = [tex]\frac{4500}{1200}[/tex] = 3.75 and
T = [tex]\frac{4500}{3750}[/tex] = 1.2
The magnitude of the difference
= | 3.75 - 1.2 | = | 1.2 - 3.75 | = 2.55 ← difference in temperature