If the recommended adult dosage for a drug is D (in mg), then to determine the appropriate dosage c for a child of age a, pharmacists use the equation:

Question

c = 0.0417D(a + 1)

Suppose the dosage for an adult is 300 mg and the slope is 12.51

1) find the dosage for a newborn: ______ mg

Answer 1

12.51 mg

Answer 2

but the slope is not 12.51 ...
??