Given Principal $11,000, Interest Rate 128, Time 240 days (use ordinary interest) Partial payments: On 100th day, $4,600
On 180th day, $2,800
a. Use the U. S. Rule to solve for total interest cost. (Use 360 days a year. Do not round Intermediate calculations.
Round your answer to the nearest cent.)
Total interest cost
b. Use the U. S. Rule to solve for balances. (Use 360 days a year. Do not round intermediate calculations. Round your
answers to the nearest cent.)
On 100th day
On 180th day
Balance after the payment

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno step statement reason 1 ∠oln ≅ ∠lno given 2 draw oe as a perpendicular bisector to ln by construction 3 ∠leo ≅ ∠neo transitive property of equality 4 m∠leo = 90° definition of a perpendicular bisector 5 m∠neo = 90° definition of a perpendicular bisector 6 le ≅ en definition of a perpendicular bisector 7 δole ≅ δone side-angle-side (sas) postulate 8 ol ≅ on cpctc nina made two errors in the proof. identify and correct the errors.