(a) Let a be an age of an child in years. Then
c=0.0417D⋅a+0.0417D, D=const Given that D=200 mg. Then the slope of the graph is
slope=0.0417(200)=8.34(mg/year)The slope shows that the appropriate dose c for an older child increases by 8.34 mg if the child is one year older.
(b) Newborn baby: a=0
c(0)=0+0.0417(200)=8.34(mg) The dose for newborn baby is 8.34mg.
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