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PC Question 17 Charles McCoy is a manager at a coffee shop, and he has to decide how many workers to hire. One worker can make 20 drinks that sell for $4 on average in one hour. A second worker can make another 16 drinks in one hour. The marginal benefit of each additional worker decreases by four drinks, with each additional hire. Given that workers are paid $15 per hour and have eight- hour shifts, how many employees should Charles hire for each hour? O Five - Six O Seven O Four 0.4 pts Question 18 Which of the following lists only factors that would cause a decrease in the demand for a good? An increase in network effects; a rise in income (if the good is a normal good); a rise in the price of a substitute good. An increase in congestion effects; a decrease in the number of consumers in the market; increase in popularity of a product. O A decrease in popularity of a good; a rise in income (if the good is an inferior good); a fall in the price of a substitute good. O A decrease in the number of consumers in the market; a rise in the price of a substitute good; a fall in the price of a complementary good