)calculating the amount for an emergency fund. beth and bob martin have total take-home pay of $4,200 a month. their monthly expenses total $3,100. calculate the minimum amount this couple needs to establish an emergency fund. how did you calculate this amount?

Employees at a library check out books to patrons. books have an isbn and a name. the library sometimes has multiple copies of the same book. books have one or more authors. a patron is an individual who has an active (non-expired) library card. for each library card, we store the person's first and last names and their address. for each employee, we store their employee id, current salary, first and last name and their address. we also store the employee id of their current manager. each time we check out a book to a patron we need to store the date of the transaction, the employee who checked out the book to the patron, and the library card of the patron. some employees have library cards. if an employee patron turns in a book late, the fine that they pay is a percentage of their salary. some employees are authors who have library cards—they are allowed to check out as many books as they like.

Hilary works at klothes kloset. she quickly the customers, and her cash drawer is always correct at the end of her shift. however, she never tries to "upsell" the customers (for example, by asking if they would like to purchase earrings to go with the shirt they chose or by suggesting a purse that matches the shoes they are buying). give hilary some constructive feedback on her performance.

Aproperty title search firm is contemplating using online software to increase its search productivity. currently an average of 40 minutes is needed to do a title search. the researcher cost is $2 per minute. clients are charged a fee of $400. company a's software would reduce the average search time by 10 minutes, at a cost of $3.50 per search. company b's software would reduce the average search time by 12 minutes at a cost of $3.60 per search. which option would have the higher productivity in terms of revenue per dollar of input?