Cost Analysis: formalizing fixed and variable costs

Section role: supports the 'Mapping the Money' section while the teacher formalizes mathematical language and connects challenge findings to the linear cost function. Slides: (1) Title — 'Mapping the Money: Fixed vs. Variable Costs'; (2) Defining Fixed Costs — bullets: expenses that do not change with production volume, $650 truck rental and permit example; (3) Defining Variable Costs — bullets: expenses that change based on volume, $2 ingredients per taco example; (4) Total Cost Formula — bullets: C(x) = Variable Cost(x) + Fixed Cost, connecting to y = mx + b; (5) Taco Galaxy Math Walkthrough — step-by-step breakdown of calculating costs for 0, 50, and 200 tacos; (6) Common Misconception — addressing the error that Total Cost is just Variable Cost times quantity; (7) Closing slide — 'How does our cost equation change if the truck rental increases by $100?' — hands control back to the teacher for the upcoming profitability check.

Lara from Teachy