Answer:
41.9496 mg/hr
Explanation:
1 pound=.454 kg
multiply both by 220
220 pounds=99.88kg
7 mcg/min= x mcg/hr
multiply 7 by 60 because there are 60 minutes in an hour
420 mcg/hr
420*99.88 to get mcg/hr
41,949.6 mcg/hr
divide by 1000 to get mg
41.9496mg/hr
exercise and a healthy diet