21. Name University tries to maintain an average of seven undergraduate students for every two graduate students. For every 100 graduate students admitted, how many undergraduate students would you expect to be admitted? a. Is there a rate in this problem? If so, what is it and why is it a rate? If not, why not? b. What unit fraction is associated with this rate? c. Answer the initial question using the unit rate. d. Set up a proportion and solve the problem without using the unit rate. e. Use a model such as a ratio table or a double number line to solve the