Answer:
![\left[\begin{array}{ccccccc}\\ &&$Carrying Value&$Cash&$Int. exp&$Amortization&$E.Carrying\\& 1&493574.88&26100&19743&6357&487217.88\\& 2&487217.88&26100&19488.72&6611.28&480606.6\\& 3&480606.6&26100&19224.26&6875.74&473730.86\\& 4&473730.86&26100&18949.23&7150.77&466580.09\\& 5&466580.09&26100&18663.2&7436.8&459143.29\\& 6&459143.29&26100&18365.73&7734.27&451409.02\\& 7&451409.02&26100&18056.36&8043.64&443365.38\\& 8&443365.38&26100&17734.62&8365.38&435000\\\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccccccc%7D%5C%5C%09%26%26%24Carrying%20Value%26%24Cash%26%24Int.%20exp%26%24Amortization%26%24E.Carrying%5C%5C%26%091%26493574.88%2626100%2619743%266357%26487217.88%5C%5C%26%092%26487217.88%2626100%2619488.72%266611.28%26480606.6%5C%5C%26%093%26480606.6%2626100%2619224.26%266875.74%26473730.86%5C%5C%26%094%26473730.86%2626100%2618949.23%267150.77%26466580.09%5C%5C%26%095%26466580.09%2626100%2618663.2%267436.8%26459143.29%5C%5C%26%096%26459143.29%2626100%2618365.73%267734.27%26451409.02%5C%5C%26%097%26451409.02%2626100%2618056.36%268043.64%26443365.38%5C%5C%26%098%26443365.38%2626100%2617734.62%268365.38%26435000%5C%5C%5Cend%7Barray%7D%5Cright%5D)
<u>Journal entries:</u>
cash       493,574.88 debit
  bonds payable   435,000.00 credit
  premium on bp     58,574.88 credit
--to record issuance--
Interest expense	19743	
 Amortization	6357
 cash	26100
--to record Dec 31st, 2020--
Interest expense	19488.72	
 Amortization	6611.28
 cash	26100
--to record June 30th, 2021--
bonds payable    130,500.00 debit
premium on bp       13,681.98 debit
interest expense    17,400.00 debit
       gain on redemption           25,081.98 credit
        cash                                 136,500.00 credit
--to record redemption--
premium on BP      4,813.04 debit
interest expense  13,456.96 debit
         cash                         18,270 credit
-- to record December 31st, 2021--
Explanation:
First, we solve for the proceeds from the bonds payable:
 
 
C	26,100 (435,000 x 12% / 2)
time	8 ( 4 years x 2)
yield to maturity  0.04 ( 8% / 2)
 
 
PV	$175,724.6412 
 
  
  
 Maturity   435,000.00 
 time   8.00 
 rate  0.04
  
  
 PV   317,850.24 
 
PV c	$175,724.6412 
PV m  $317,850.2392 
Total	$493,574.8804 
We now build the amortization schedule.
We take this value, we multiply by the interest rate and then, solve for amortization and ending carrying value. 
<u>To record the redemption:</u>
accrued interest:
435,000 x 0.12 x 4/12 (months from June to oct) = 17,400
premium:
480,606.6 - 435,000 = 45,606.6
proportional of premium:
45,606 / 435,000 x 130,500 = 13.681,98
we now solve for the gain/loss on redemption:
130,500 + 13,681.98 + 17,400 = 161.581,9 value redeem
                                       for cash 136,500 
gain on redemption 25.081,98
bonds payable    130,500.00 debit
premium on bp       13,681.98 debit
interest expense    17,400.00 debit
       gain on redemption           25,081.98 credit
        cash                                 136,500.00 credit
Now, we solve for Dec 31st, 2021 entry.
bonds payable: 435,000 - 130,500 = 304,500
premium: 45,606 - 13,681.98 = 31.924,02
interest expense:
(304,500 + 31,924.02) x 0.04 = 13,456.96
cash outlay:
304,500 x 0.06 = 18,270
amortization 18,270 - 13,456.96 = 4,813.04