How did the Industrial Revolution impact production?

Stie cineva cati ani poti fii director de sa imi specificati si legea va rog

John recently received his semester grades and found that he had failed two courses. he says the reason he failed the two courses is that they were taught by female professors. john believes that women are really not smart enough to teach at the college level. in this example, the female professors are a) spacegoats and being blamed for john's grades b) being discriminatory toward john c) probably not smart enough to teach in a college d) prejudiced against john because he is male

This graph shows the marginal cost of producing each additional pair of running shoe inserts .whoih pair of shoes had a marginal cost of $3.00?