ANSWER
0.0135 s
EXPLANATION
We know that telephone signals travel about the speed of light, which is 1.86 x 10⁵ miles per second. We want to know how long would it take to travel 2500 mi,
[tex]v=\frac{d}{t}[/tex]Solving for t,
[tex]t=\frac{d}{v}[/tex]Substitute the known values and solve to find t,
[tex]t=\frac{2500mi}{1.85\cdot10^5mi/s}\approx0.0135s[/tex]Hence, it would take 0.0135 seconds for the signal to travel 2500 miles.
