The depreciated value in year 4 is 14,000. In year 5, it is 8,400. The depreciation expense in year 5 is
.. $14,000 -8,400 = $5,600
Angle c= 60°
This is because 105+25+x=180°
Hope this helps and good luck!! :)
1+3+5+7+9+11+13+15+17+19 is the answer. Hopefully this helped!! :)