Need asap sal is participating in a charity walk. the distance sal walks, in kilometers, is proportional to the number of hours he spends walking. which statements are true about the distance sal walks? select each correct answer. a. sal walks 1 km in 3.5 h. b. sal walks 14 km in 4 h. c. sal walks 4 km in 14 h. d. sal walks 3.5 km in 1 h.