Molly (153 lbs) swims at a pace of 50 yards per minute (MET = 8.0). What is her total caloric expenditure in kcals during 45 minutes of swimming at this pace? 572.2 kcals O 1441.8 kcals O 234.8 kcals 438.5 kcals Scott (180 lbs) is injured and has to walk with crutches, which has a MET value of 5.0. It takes 20 minutes for Scott to get from his car to class using his crutches. How many calories does he expend during this walk? 167.1 kcals 143.2 kcals O 124.4 kcals 221.2 kcals