Find x, y, and z . Similarity in triangles geometric mean. Need help with questions 8 and 9

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

At store a, erasers are sold individually. the cost y of x erasers is represented by the equation y=0.75x. the costs of erasers at store b are shown in the graph.

35 ! insert < , > , or = to make the sentence true. 12 __ 25 > =