reuben wants to earn at least $57 trimming trees. he charges $6 per hour and pays $9 in equipment fees. what are the possible numbers of hours reuben could trim

20 solve 2(4 x + 3) < 5 x + 21. a) { x | x < 9} b) { x | x > -5} c) { x | x > -9} d) { x | x < 5}

Two trains leave stations 546 miles apart at the same time and travel toward each other. one train travels at 95 miles per hour while the other travels at 115 miles per hour l. how long will it take for the two trains to meet

What are linear equations? could'ya explain too me, ? ! and how do you see what graph is a proportional relationship?