Assess students' ability to analyze how changes in supply, demand, pricing, and competition affect prices and sales at a school bake sale. The quiz will present short scenarios (e.g., price changes, ingredient shortages, competing tables, promotions) and ask learners to predict effects on quantity sold and revenue, justify answers using basic supply-and-demand reasoning, interpret simple tables or graphs, and recommend pricing or production adjustments. (Grade 6–8; medium difficulty.)