Shawn Bixby borrowed $30,000 on a 150-day, 12% note. After 65 days, Shawn paid $3,300 on the note. On day 106, Shawn paid an additional $5,300. 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