Which ordered pair does NOT lie on the graph of h(x)= -2x+7. Please hurry

1. what are the missing reasons in the proof 2. it's in the second picture and 3

Someone answer this check out the image!

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.