How high would a child's heartrate go when they have a fever of concern if their sleeping baseline is about 100bpm? (4yo cellulitis, bactrim (sulfamethoxazole and trimethoprim) begun am)

Rule of 10's: I generally expect a kid's heart rate to increase 10 beats per minute for every degree of fever above baseline.Activity will add more. Breathing rate follows a rule of 5's, increasing 5 breaths per minute for each degree. Both parameters mark the increase of fuel needed to sustain the work of healing, the fuel being oxygen & the heart pushing it around where its needed.