Please answer them all ASAP

On April 1, 2021, Harry Corp bought a new Nimbus 3000 making machine. The cost of the machine is $600,000 with an estimated 8-year life and $180,000 residual value. Assuming that Harry Potter Corp uses the double diminishing-balance method of depreciation, what is the carrying amount of the machine on December 31, 2021? a) $525,000 b) $543,750 c) $450,000 d) $487,500 Neville Longbottom Limited issued 6-year, Face Value $250,000, 7% bonds on January 1, 2021. The bonds pay interest every December 31, with the principal to be re-paid on maturity date. The market interest rate on the bonds is 6%. What were the net proceeds from the bond issue? a) $ 250.000 b) $ 262,293 c) S 267.500 d) $ 238.084 A company has revenues of $50,000, unearned revenues of $30,000, wage expense of $20,000, depreciation expense of $12,000, interest expense of $8,000, prepaid interest of $1,000 and income tax expense of $3,000, Based on the preceding: a) The company has operating income of $9,000 and net income of $6,000 b) The company has operating income of $47,000 and net income of $36,000 c) The company has operating income of $10,000 and net income of $6,000 d) The company has operating income of $18,000 and net income of $7,000 On December 1, McGonagall Inc. received a 90-day note for $30,000 from Flitwick Limited when McGonagall sold merchandise to Flitwick. The note bears interest at 6% and is due along with all interest applicable to the note on February 1. Both McGonagall Inc. and Flitwick Corp. have year ends on December 31 and make adjusting entries at that time. On March 1, when McGonagall Inc. receives payment for the note and related interest, it will record a journal entry that will include: a) A debit to interest receivable for $150 b) A credit to interest revenue for $300 c) A debit to cash for $30,300 d) A credit to interest receivable for $450 A company that uses the periodic inventory method has just returned some inventory that it purchased on credit from a supplier. As a result of this transaction the company would record: a) A credit to accounts payable b) A credit to inventory c) A credit to purchase returns d) A debit to purchases