Last week at an insurance company, Dirk sold an average of 66 automobile and 55 homeowner policies per day over a 55-day period, Priya sold an average of 99 automobile and 77 homeowner policies per day over a 55-day period, and Cheyenne sold an average of 10 automobile and 88 homeowner policies per day over a 44-day period. Complete parts a and b below.