The hourly operating cost of a plane which seats up to 405 passengers is estimated to be $5,274. If an airline charges each passenger a fare of $120 per hour of flight, find the hourly profit P it earns operating the plane as a function of the number of passengers x. [HINT: The cost function is constant (variable cost = 0).] P(x) =
Specify the domain. (Enter your answer using interval notation.)

What is the least number of passengers the plane must carry to make a profit? (Round your answer up to the nearest whole number.)

Given δjkl : δxyz, find x. a)10 b)12 c)16 d)20

1. why is a frequency distribution useful? it allows researchers to see the "shape" of the data. it tells researchers how often the mean occurs in a set of data. it can visually identify the mean. it ignores outliers. 2. the is defined by its mean and standard deviation alone. normal distribution frequency distribution median distribution marginal distribution 3. approximately % of the data in a given sample falls within three standard deviations of the mean if it is normally distributed. 95 68 34 99 4. a data set is said to be if the mean of the data is greater than the median of the data. normally distributed frequency distributed right-skewed left-skewed

Find the measurement of angle b in the following triangle