What math symbol is this?
Σ

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.

Solve for x where 0 equation: cot^2x+2cotx+1=0

Zahra runs a 500-meter race at a constant speed. which graph shows her distance from the finish line during the race?