Kim works 3 hours more each day than Jill does, and Jack works 1 hour less each day than Jill does. Over 2 days, the number of hours Kim works is equal to the difference of 3 times the number of hours Jack works and the number of hours Jill works. How many hours does each person work each day? Let x be the number of hours Jill works in one day.

Witch represents the inverse of the function f(x)=1/4x-12

Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?

If the value of cos330°is√3/2 then find cos 165°.