The first shipping company charges a fee of $20 to ship a medium box, plus an additional $2 per kilogram. A second shipping company charges $10 for the same size of box, plus an additional $4 per kilogram. Write a linear system to model the situation in which y is the cost and x is the weight.

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

Need asap i will give brainliest and 98 points classify each pair of numbered angles corresponding, alternate interior, alternate exterior or none o these

What is the domain of the step function f(x)=[2x]-1?