hello im struggling with 5,6,7,8 thank you

5 / Using the activity method, calculate the amount of depreciation expense for the following asset. Original cost = $30,000, Useful life = 100,000 miles Salvage value $5,000,25,000 miles in the Current x 133 Assume that the following asset was purchased on April 1. Calculate the amount of depreciation expense for the partial year. Use the straight-line method. Cost-$55,000 Salvage Value $5,000: Estimated life 15 years X 7,500 Calculate the amount of accrued interest for the following situation. Principal $15,000. Interest Rate 100 Time.months X 1875 8 / Aloan was taken out on January 1, 2016 in the amount of $20,000. During the year payments were made to pay back the loan. The payments included $2.000 in interest and $1.230 in principal. What is the loan balance on December 31, 2018 X 1.833