Answer:
Feb. 1 DR Cash $400,000
CR Tax anticipation notes $400,000
Dec 31 DR Expenditures - Interest $3,666.67
CR Accrued Interest Payable $3,666.67
Working
February to December = 11 months
Interest = 400,000 * 1.0% * 11/12 months = $3,666.67
April 1 DR Investments $100,000
CR Cash $100,000
Sept. 30 DR Cash $50,200
CR Investments $50,000
Interest Income $200
Working
Interest Income = 50,000 * 0.8% * 6/12 months
= $200