Machine 1 can complete a task in x hours while an upgraded machine (machine 2) needs 9 fewer hours. The plant mana
knows the two machines will take at least 6 hours, as represented by the inequality
Which answer choice includes all solutions to the inequality and identifies which interval(s) contain viable completion time
machine 12
(0.31 U 9.18] both contain viable times for machine 1
(0 3] U9,18]; only (9.18) contains viable times for machine 1
(-00U13,9 UL18,co), no interval contains viable times for machine 1
(-0,0) U(39) U (18,co), but only [18,00) contains viable times for machine 1
