5. The AND-OR circuit that implements the following function, has a cost of 14 (4 gates plus ten inputs). f(x, y, z) =+xy+xyz Apply Shannon's expansion to derive a multi-level equivalent circuit with reduced cost, and state what is the new cost. 6. A priority 16-to-4 encoder has active LOW inputs and outputs. If there are LOWS only on the following inputs what binary code will appear on the output? a) LOWS on inputs 2,5, and 8 b) LOWS on inputs 1,4, and 7 c) LOWS on inputs 4,7, and 11