If the price of a product is $20, marginal analysis says which of the following must be true in order for a consumer to purchase the product?

Nikolas works in a shoe store as a salesperson. a teenage boy comes in looking for comfortable sports shoes because he is going on a hike. he tells nikolas he wants shoes that have velcro straps. nikolas shows him a wide variety of velcro-strapped shoes, but the customer rejects them because they don't feel comfortable. he asks for sports shoes with laces instead. nikolas once again shows him a wide variety. the boy is once again not satisfied and asks to see the velcro-strapped shoes again. nikolas is irritated but doesn't show his annoyance. what customer service skill is nikolas showing? nikolas is a. meekness b. patience c. persistence

Mr. smith recently faced a choice between being (a) an economics profes-sor, which pays $60,000/yr, or (b) a safari leader, which pays $50,000/yr. after careful deliberation, smith took the safari job, but it was a close call. "for a dollar more," he said, "i'd have gone the other way."now smith's brother-in-law approaches him with a business proposition. the terms are as follows: - smith must resign his safari job to work full-time in his brother-in-law's business.- smith must give his brother-in-law an interest-free loan of $100,000, which will be repaid in full if and when smith leaves the business. (smith currently has much more than $100,000 in the the business will pay smith a salary of $70,000/yr. he will receive no other payment from the business. the interest rate is 10 percent per year. apart from salary considerations, smith feels that working in the business would be just as enjoyable as being an economics professor. for simplicity, assume there is no uncertainty regarding either smith's salary in the proposed business or the security of his monetary investment in it. should smith join his brother-in-law and, if so, how small would smith's salary from the business have to be to make it not worthwhile for him to join? if not, how large would smith's salary from the business have to be to make it worthwhile for him to join?

Amanda rice has just arranged to purchase a $640,000 vacation home in the bahamas with a 20 percent down payment. the mortgage has a 7 percent apr compounded monthly and calls for equal monthly payments over the next 30 years. her first payment will be due one month from now. however, the mortgage has an eight-year balloon payment, meaning that the balance of the loan must be paid off at the end of year 8. there were no other transaction costs or finance charges. how much will amanda’s balloon payment be in eight years