Shawn Bixby borrowed $23,000 on a 180-day, 11% note. After 80 days, Shawn paid $2,600 on the note. On day 120, Shawn paid an additional $4,600. Use ordinary interest.

a.	Determine the total interest use the U.S. Rule. (Do not round intermediate calculations. Roundyour 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

$