Stock dividends and interest payments are examples of factors of production

In the above table, what is the marginal physical product of worker 2?

A) 10 B) 18 C) 11 D) 9

We say that goods are substitutes when they:

A. change a consumer's preferences for a good or service. B. can replace something consumers typically purchase at a significantly lower price. C. are consumed together, so that purchasing one will make a consumer more likely to purchase the other. D. serve similar-enough purposes that a consumer might purchase one in place of the other.