2. If Kris makes \( d \) dollars and Heidi makes 75 dollars less than 3 times Kris's wage, what does Heidi make in terms of \( d \) ? A. \( d+75 \) B. \( d-225 \) C. \( 3 d-75 \) D. \( 3 d-225 \) E. \( \frac{d}{3-75} \)

Heidi's wage can be calculated based on Kris's earnings. Since Kris makes \( d \) dollars and Heidi makes 75 dollars less than 3 times Kris's wage, we can express this mathematically. Heidi's paycheck is represented as \( H = 3d - 75 \). So the correct choice is C: \( 3d - 75 \). Now, let’s dive into a bit of math fun! Did you know that algebra has roots in ancient civilizations? The Babylonians were quite the mathematical wizards, using geometric methods that resemble algebraic techniques of today, as far back as 2000 BC! They even had algorithms for solving quadratic equations—talk about being ahead of their time! For a practical application, think about budgeting! Suppose you earn \( d \) dollars weekly. If you want to plan a significant purchase like a new gadget or a mini-vacation, understanding your earning dynamics like Kris and Heidi's wages can help. By computing 'Heidi’s amount' or planning around multiple income sources, managing your finances becomes a breeze!