Please help me with the questions

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

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

What function has a range {yly< 5}? question on picture above^