Help me please! 30 Points!! Freshman Math

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

Solve the equation by completing the square. x^2+2x=17

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.