Math problem (Please help, image shown!)

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?

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.

M.xyz =radians. covert this radian measure to its equivalent measure in degrees.