Answer:
Dr  Investment in bonds         $100,000
Cr Cash                               $100000
To record the purchase of investment in bonds
Explanation:
Since Jerome Inc. parted with $100000 in order to invest in the bonds,cash balance has reduced by $100000(a credit) and investment in bonds held to maturity account has increased by the same $100000(a debit)
Hence the journalized entries are
Dr  Investment in bonds         $100,000
Cr Cash                               $100000
To record the purchase of investment in bonds
However,interest is due on 30 September, the interest to be recognized on that date is shown by a way of journal entry below assuming the interest was received on that day:
The interest is calculated as :$100000*8%=$8000
Dr  Cash                $8000
Cr Investment income            $8000
If the interest was not received in cash, the journal entries would look like this:
Dr  Interest receivable                 $8000
Cr Investment income                        $8000