1. A block of ice is 3m wide, 4m high, and 5m long. When temperature increases, the block of ice melts 3 uniformly, and its new volume is modeled by V(x) =− x³ + 12x² − 47x + 60, where V(x) is volume in m³ and x is the increase in temperature in °C. Determine the temperature increase needed for the volume to be exactly 6 m³.

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