Which ordered pair is the solution to the system of equations? {y=3x−12 4x+6y=−6 (0, −12) (3, −3) (4, −7) (6, −5)

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Randy and trey take turns cleaning offices on the weekends. it takes randy at most 4 hours to clean the offices. it takes trey at most 6 hours to clean the offices. what is the greatest amount of time it would take them to clean the offices together? 2.4 hours 2.5 hours

Sioux co. replaced the roof on its existing building, therefore increasing the building's life by 10 years. the cost of the roof is considered a(n):