Suppose the signal strength in a fiber-optic cable diminishes by 15% every 10 mi.
a. What percentage of the original signal strength is left after a stretch of 10 mi?
b. Create a table of the percentage of signal strength remaining in 10 mi intervals, and make a graph of the sequence.
c. If a phone company plans to boost the signal just before it falls to 1%, how far apart should the company place its booster stations?