I really need help answering these questions for economics

Plz i have no idea what a cover letter is can u guys explain it to me write a letter to the address below. you are responding to an advertisement from the willamette company for a job opening as an office assistant. you did some research and learned that the person to whom the application should be sent is ms. katrina n. d. waives. you are going to enclose a résumé and three letters of reference. your résumé will have details about your qualifications, so you should just give a brief but inviting overview of them here. in addition, your letter will include a very important paragraph that is not normally a part of a business letter. you will tell what format you are using for your letter where you got the information on this format. address of the willamette company: 355 buck hill road, portland, oregon 48792.

After testing its water, a city water department issues a report to the related citizens, noting what chemicals have been identified, their doses, and the estimated risks of exposure at these levels. this report represents a type of

Scoresby co. uses 6 machine hours and 2 direct labor hours to produce product x. it uses 8 machine hours and 16 direct labor hours to produce product y. scoresby's assembly and finishing departments have factory overhead rates of $240 per machine hour and $160 per direct labor hour, respectively. how much overhead cost will be charged to the two products? a. product x = $1,440; product y = $2,560 b. product x = $1,760; product y = $4,480 c. product x = $3,200; product y = $9,600 d. product x = $800; product y = $800