Which data set has the smallest IQR

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.

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

Y+ 2/y is it a polynomial in one variable or not? and if so, why?