The paths of two orcas playing in the ocean were recorded by some oceanographers. The rst orca's path could be modelled by the equation M t) = 2:4 171'3 + 27t2 252: + 232, and the second by Mt) = 20f3 - 200t2+ 300: - 200, where I) is their height above/ below the water's surface in centimetres and t is the time during the rst 8 s of play. Over this 8-second period, at what times were the two orcas at the same height or depth? Open-top boxes are Reasoning and Proving constructed by cutting Representing Selecting Tools equal squares from the Problem Solving corners of cardboard Connecting Reflecting sheets that measure Communicating 32 cm by 28 cm. Determine possible dimensions of the boxes if each has a volume of 1920 cm. 28 cm 32 cm