### What is the db strength of the signal at point z? Is this how 33600 bps modem operates?

1. A signal starts at point x. As it travels to point y it loses 8 db. At point y the signal is boosted by 10 db. As the signal travels to point z it loses 7 db. What is the db strength of the signal at point z? 2. What is the decibel loss of a signal that starts at point A with a strength of 2000 watts and ends at point B wi