One neon sign flashes every 4 seconds, and another neon sign flashes every 6 seconds. At a certain instant, the 2 signs flash at the same time. How many seconds elapse until the 2 signs next flash at the same time? 3 _ _ 2 x O (0,1) y x O (0,1) y x O (0,1) (0,1) y x O y x O (0,1) 3 _ _ 8 7 __ _ 16 13 __ _ 8 13 __ _ 16 5 __ _ 24 1 __ _ 32 13 __ _ 32 DO YOUR FIGURING HERE. 20 GO ON TO THE NEXT PAGE. ACT-Z14 2 2 Jerry is building a rectangular patio against one side of his house. The top surface of the patio, along with its width and diagonal, is shown in the figure below. To build the patio, he will first dig a rectangular hole to a uniform depth of 8 inches. He will then fill the hole with gravel to a uniform depth of 3 inches. He will purchase gravel from his local rock quarry for $54 per cubic yard (1 cubic yard = 27 cubic feet). Next, he will pour concrete on top of the gravel to obtain a smooth surface for the patio. Finally, he will frame and build a rectangular concrete step with the dimensions shown below.
