Anybody have the answer? a correct answer?

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

How do you determine whether a relationship represented as as graph is linear or nonlinear

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.