Depreciation in the second year =95×5%=4.75

Depreciation in the third year =90.25×5%=4.5 125.

Depreciation in the fourth year =85.7375×5%=4.2869

The fifth year depreciation =8 1.4506×5%=4.0725.

After 5 years, the equipment value =100-5-4.75-4.5125-4.2869-4.0725 = 77.56438+0.

2. Now the temperature at the foot of the mountain is 32 degrees, and the temperature at the top of the mountain is 8 degrees, a difference of 24 degrees.

Every time 1000 meters rises, the temperature will drop by 6 degrees, so,

The height of the top of the mountain relative to the foot of the mountain =(24÷6)× 1000=4000m.