It's definitely not how it's explained to a tenth grader. In high school economics classes I was definitely introduced to marginal cost curves for firms in perf

It's definitely not how it's explained to a tenth grader. In high school economics classes I was definitely introduced to marginal cost curves for firms in perfectly competitive markets, like so: https://upload.wikimedia.org/wikipedia/commons/4/43/Economics_Perfect_competition.svg https://upload.wikimedia.org/wikipedia/commons/4/43/Economic...