Shawn Bixby borrowed $35,000 on a 210-day, 8% note. After 80 days, Shawn paid $3,800 on the note. On day 126, Shawn paid an additional $5,800. Use ordinary interest. a. Determine the total interest use the U.S. Rule. (Do not round intermediate calculations. Round your answer to the nearest cent.)

Total interest $

b. Determine the ending balance due use the U.S. Rule. (Do not round intermediate calculations. Round your answer to the nearest cent.)

Ending balance due $