The manager of an 80-unit apartment complex knows from experience that at a rent of $1000 per month, all units will be rented. However, for each increase of $25 in rent, he can expect one unit to be vacated, Let xrepresent the number of $25 increases over $1000. Complete parts (a) through (e) below.(a) Express, in terms of x, the number of apartments that will be rented if x increases of $25 are made. (For example, with three such increases, the number of apartments rented will be 80-3=77.)The number of apartments that will be rented if x increases of $25 are made is