WHAT EVEN IS THIS I DONT UNDERSTAND PLEASE SOMEONE EXPLAIN

Use the elimination method to find the solution to the system of equations. 2x - 3y = -9 -x + 3y = 6

Long division the problem is 40 ➗ 348 = ?

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.