Answer
5s
(5 seconds)
Work Step by Step
Clock C is located 4 clocks away from the origin on the x-axis and 3 clocks away from the y-axis. We can use the Pythagorean theorem to find the total distance from the origin to Clock C.
$$c^2=a^2+b^2$$
$$c=\sqrt{a^2+b^2}$$
$$c=\sqrt{4^2+3^2}$$
$$c=5$$
We were given that each clock is one light-second apart, so the signal will take 5 seconds to reach the clock, and the clock will then be set at 5 seconds.
