What is the reduction half-reaction for the following overall galvanic cell reaction? Ca2+(aq) + 2 Ag(s) → Ca(s) + 2 Ag+(aq)

The graph indicates the running route for tobias. which best describes his run? from time 0 to 6, he went fast and then slowed down. from time 6 to 10, he was at his slowest. from time 12 to 14, he went very slow. from time 14 to 18, he went toward the starting point.