There are 361 seventh-grade students going on a field trip. If each bus holds 40 people and there are 20 chaperones going, how many buses are needed?

Airline passengers arrive randomly and independently at the passenger-screening facility at a major international airport. the mean arrival rate is 10 passengers per minutes. compute the following probabilities. p(x = 4) p(x > 11)

Why do interests rates on loans to be lower in a weak economy than in a strong one

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary