1. **Problem statement:** Calculate the interest portion, principal portion, and new balance after Barbara Jackson makes her November mortgage payment. 2. **Given data:** - Mortgage balance $B = 277000$ - Annual interest rate $r = 8.625\% = 0.08625$ - Monthly payment $P = 3324$ 3. **Formula for monthly interest:** Monthly interest $I = B \times \frac{r}{12}$ 4. **Calculate interest portion:** $$I = 277000 \times \frac{0.08625}{12} = 277000 \times 0.0071875 = 1990.31$$ 5. **Calculate principal portion:** Principal paid $= P - I = 3324 - 1990.31 = 1333.69$ 6. **Calculate new balance:** New balance $= B - \text{principal paid} = 277000 - 1333.69 = 275666.31$ **Final answers:** - Interest portion: $1990.31$ - Principal portion: $1333.69$ - New balance: $275666.31$