Mai runs around 400 meters tram at a constant speed of 250 meters per minute how many minutes does it take Mai to complete 4 laps of the tram explain your reasoning

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Solve the system of equations. y= 2x y= x^2 - 15

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.