In Racket Programing language

Write a function dates_in_month that takes a list of dates and a month (i.e., an int) and returns a list holding the dates from the argument list of dates that are in the month. The returned list should contain dates in the order they were originally given.

To make your life easier you may want to write an append function to be used in this one. It should take two list and append the second onto the first. You can Google this part or write your own as it is not much to do.