High School Math Homework Help -- 2

I have a batch of High School Mathematics questions that a student needs to work through this week. I’m looking for clear, step-by-step solutions that don’t just give an answer but also explain the reasoning so the student can follow the method later on.

The set may touch on any of the usual Grade 9-12 topics—Algebra, Geometry, Trigonometry, or a mix—so you should feel comfortable moving between them as needed. Accuracy and clarity matter more than speed; each solution should read like a mini-lesson the learner can revisit before tests.

Deliverables
• A neatly formatted document (Word, PDF, or shared Google Doc) containing each problem rewritten, worked out, and explained.
• Brief notes after every solution highlighting common pitfalls or tips for checking work.
• Availability to clarify up to two follow-up questions once the student reviews the material.