Simplify (4.5)(−9)(−1.8). Can somebody please help me on this and give a full explanation so I pass my exam

Which strategy is used by public health to reduce the incidence of food poisoning?

1. if events a and b are non-overlapping events, how do you find the probability that one or the other occurs? 2. what does it mean if p(a or b) equals 1?

At a soccer tournament 1212 teams are wearing red shirts, 66 teams are wearing blue shirts, 44 teams are wearing orange shirts, and 22 teams are wearing white shirts. for every 22 teams at the tournament, there is 1 team wearing shirts. choose 1