Benson sells vacuum cleaners on a commission he earns $75 for each vacuum cleaners sucks how many vacuum cleaner should he sell so that he will have a monthly salary of at least $1,400

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?

(-y to the power of 2 - 4y- to the power of 2 -6 y +3)