Question

The dose d (in miligrams) of a particular medicine that a pediatrician prescribes for a patient varies directly with the patient's mass m (in kilograms). The pediatrician recommends a dose of 150 mg of medicine for a patient whose mass is 30 kg.

a. Write a direct variation quation that relates m and d.

b. What would the dose of medicine be for a patient whose mass is 50 kg?

Answer 1

Help please?

Answer 2

for every 30 kg the patient is given 150 mg, so \(\dfrac{150~mg}{30kg}=5~mg/kg\)

dose (in mg) = patient mass (in kg) * 5 mg/kg

Answer 3

that would be for a, for b just plug in the mass in the formula

Answer 4

b would be 250?

Answer 5

50 kg *5 mg/kg = 250 mg

Answer 6

yes

Answer 7

is this algebra?

Answer 8

Algebra 1 yes