The point a, b,c, and d represent the complex number z1,z2,z3 and z4 and o is the origin. a)if oabc is a parallelogram and z1=1+i, and z2=4+5i, then find z3.

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.