Answer
a) The recommended dosage for a person whose mass is 60 kg is 660 mg.
b) The recommended dosage for a 200-lb person is 1260 mg.
Work Step by Step
D= $0.1 m^{2} + 5m$
A) Substitute the given mass of 60 kg for m in the equation.
m=60
D= $0.1 (60)^{2} + 5(60)$
D= 660 mg
Therefore, the recommended dosage for a person whose mass is 60 kg is 660 mg.
B) mass = 200-lb
1. convert pounds to kilograms.
1 lb=0.45 kg
=0.45(200) kg
= 90 kg
2. Substitute the mass of 90 kg for m in the equation.
m=90
D= $0.1 (90)^{2} + 5(90)$
D= 1260 mg
Therefore, the recommended dosage for a 200-lb person is 1260 mg.
