A signal starts at point X. As it travels to point Y, it loses 8 dB. At point Y, the signal is boosted by 20 dB. As the signal travels to point Z, it loses 2 dB. a) What is the dB gain/loss of the signal at point Z? (Show your detail calculation) b) If the the signal started at point X with a strength of 100 watts, what would be the power level of the signal at point Z? Please show the calculation. (Show your calculation) Note: When you are showing your calculation, you can use "^" (carat) for superscript, and "_" (underscore) for subscript. For example:

log10( P2/P1) can be written as log_10(P_2/P_1), and 10 can be written as 1015. log10( P2/P1) can be written as log_10(P_2/P_1), and 10 can be written as 1015