Champion Company purchased and installed carpet in its new general offices on March 31 for a total cost of $18,000. The carpet is estimated to have a 15- year useful life and no residual value. a. Prepare the journal entries necessary for recording the purchase of the new carpet. If an amount box does not require an entry, leave it blank. Mar. 311 b. Record the December 31 adjusting entry for the partial-year depreciation expense for the carpet assuming that Champion Company uses the straight-line method. If an amount box does not require an entry, leave it blank Dec. 31