What are the domain and range of this function

What is the difference between regular convex and concave polygons

The median of a data set is the measure of center that is found by adding the data values and dividing the total by the number of data values that is the value that occurs with the greatest frequency that is the value midway between the maximum and minimum values in the original data set that is the middle value when the original data values are arranged in order of increasing (or decreasing) magnitude

Using only odd number for numerators write two different subtraction problems that have a difference of 3/4