Generate a 4-minute animated explainer video titled "How Linear Equations Simplify Construction Cost Estimation" for construction management students and enthusiasts. Use a professional, engaging tone to explain how linear equations (y = mx + b) can estimate material costs. Start with a brief intro on why cost estimation matters in construction. Then, define the linear equation components (y = total cost, m = unit cost, x = quantity, b = fixed cost). Show a step-by-step example: estimate the cost of concrete for a 100-cubic-yard foundation, where unit cost is $120/cubic yard and fixed delivery cost is $500 (y = 120x + 500). Use animated graphs and tables to visualize the equation and calculation. Highlight how this method saves time on projects. End with a call-to-action: "Try linear equations for your next cost estimate!" Use a white background with dark yellow (#F0A346) highlights, black text, and minimal gray shading. Include a clear, confident voiceover and subtle construction-related visuals (e.g., animated concrete mixer).