Answer: Susan rented 124 movies.
Explanation:
Susan paid a total of $105.75, the initiation fee was of $12.75, if you subtract $105.75 and $12.75 you will get 93, susan spent $93 worth of movie rentals, now if you divide 93 by .75 for each movie rental that will get you 124 movies rented. (i hope this helps and if i did this wrong please let me know)