刘同学2020-03-08 22:35:44

A firm engages in developing and marketing electronic devices in a perfectly competitive, decreasing-cost industry. If the demand is increasing, then the most likely equilibrium response in the long run to rising demand for such devices is for selling prices to: A rise and per-unit production costs to decrease. B remain constant and per-unit production costs to remain constant. C fall and per-unit production costs to decrease. 这个题不会，网课虽然听过，但是一看那些图形有点蒙，总是感觉很难理解，麻烦讲讲