8. Either we take recycling seriously or we will be buried in garbage. If we incinerate our garbage only if our health is jeopardized, then we do not take recycling seriously. If our landfi lls are becoming exhausted, then if we incinerate our garbage, then toxic ash will be produced. If toxic ash is produced, then our health is jeopardized. Our landfi lls are becoming exhausted. Th erefore, we will be buried in garbage. (R, B, I, H, L, T) Translate the following arguments into symbolic form and use the fi rst four rules of inference to derive the conclusion of each. Th e letters to be used for the simple statements are given in parentheses aft er each exercise. Use these letters in the order in which they are listed.