There are four networks in series, the first network has a gain of 15 dB, second has a loss of 5 dB, third gain of 25 dB, and last stage a loss of 3 dB. A certain signal serve as the input of the cascaded stage resulting to an output of 25.5W of power. (Use two decimal places) (a) what will be the overall gain/loss of the whole system in dB?  (b) what is the input power in mW?

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