Please give quick ansr.

a.) Briefly explain the two ways to calculate a companys depreciation. Which one is used more often? (3 points)

b.) The USASK Corporation recently purchased an asset for $12,223,500. The company's manager expects that the asset will have a 10-year life. The asset has a 20% CCA rate. Calculate the CCA and UCC (begin and end) until the end of year 10. (10 points)