in temperate countries salt is sprayed on roads to difrost and clear roads but the long term effect of this practice is costly to motorists. explain how it is costly to motorists​

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.