On exponential equations w/ applications

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.

Select the two binomials that are factors of this trinomial x^20 - x - 20