Does anyone know the formula or how i would find total principal and interest for a mortgage from monthly payment? here is the question: 2.Jamal will pay a monthly payment of $2,309.52 on a fixed rate mortgage over 15 years. What is the total principal and interest for the life of this mortgage rounded to the nearest dollar? (3 points)
Select one: a. $415,714 b. $692,856 c. $34,643 d. $554,285.

Statements reasons 1. ab ≅ cd; ad ≅ bc 1. given 2. ac ≅ ac 2. reflexive property 3. △adc ≅ △cba 3. ? 4. ∠dac ≅ ∠bca; ∠acd ≅ ∠cab 4. cpctc 5. ∠dac and ∠bca are alt. int. ∠s; ∠acd and ∠cab are alt. int. ∠s 5. definition of alternate interior angles 6. ab ∥ cd; ad ∥ bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?