Hello can someone please help me to answer this multiple choice below.. i really need help right now. kindly explain your answer briefly. thank you

1. Which of the following is not included as the principles of managerial econ A. How the firm should decide on profit maximizing output and price given the degree of competition in the industry B. The relationship between the cost, revenue and profit objectives of the firm C. Behavior of the consumers which affect the pricing decisions of the firm D. How to attain the objectives of an organization given the limitations on its resources E. All are related to managerial economics 2. When the price of a good increases, which one is true? A. the quantity purchased by the consumers decreases B. the decrease in the quantity purchased can be explained by the reduction in the purchasing power of the consumers due to the price increase C. the quantity purchased for the good is reduced because the consumers will look for cheaper but equally good substitutes D. all are correct E. none is correct 3. Which of the following is correct? A. when the consumer suffers a reduction in his income, the demand for inferior good will increase B. when the consumer realizes an increase in his income, the demand for normal good will increase C. If products "w" and "m" are substitutes, an increase in the price of "m" will increase the demand for "w" D. If products "q" and "s" are complementary, an increase in the price of "q" will also reduce the demand for "s". E. All are correct 4. Which of the following are the pressing problems of business enterprises during the period of the pandemic?

A. weak consumer confidence which affects the company's production and sales B. intense competition in the industry C. reduction in the inventory of goods due to the intense demand by the consumers D. inability of firms to access cheap credits E. all are correct 5. Which of the following is correct? A. profit is a resource allocation mechanism B. when there are positive economic profits, more firms will exit from the industry C. when there are negative economic profits, more firms will enter the industry D. all are correct E. none is correct 6. Which of the following is correct? A. a person who supplies his own labor for free in managing his own business incurs an implicit cost B. a firm that does not consider implicit cost will have an understated profit C. economic profit is more than or equal to accounting profit, the latter being computed based only on explicit cost D. all expenses which involve cash payments are considered implicit costs E. none is correct 7. Which of the following will cause your demand for alcohol to increase today? A. the expectation that the price of alcohol will increase tomorrow B. the expectation that alcohol will be in short supply tomorrow C. news about Covid 19 has reached your community D. an increase in the number of your household members who would like to bring alcohol on travel E. All of the above 8. If a visit to Baguio city requires an RT PCR test (a test whether you are Covid 19 positive or not), then we can say that the a visit to Baguio city and the RT PCR test are A. substitute goods B. complementary goods C. not related goods 9. Given Qdx = 200 - 10 Px + 5Py - 15 Pz + .05 B, where the Qdx is the quantity demanded for product x, Px, Py and Pz are the prices of products x, y, and z respectively. which of the following is correct? A. product x and product y are complementary B. product x and product z are substitutes C. product x is an inferior good D. all are correct E. none is correct 10. If the price of an unlimited buffet increased by 10% and the number of paying clients decreased by 20 %, we can conclude that the unlimited buffet is A. price inelastic B. price elastic C. price unitary D. income elastic E. income inelastic