SOLUTION: The concentration, in parts per million, of a particular drug in a patient's blood x hours after the drug is administered is given by the function
f(x)=-x^4+13x^3-47x^2+99x
How
Algebra.Com
Question 148454: The concentration, in parts per million, of a particular drug in a patient's blood x hours after the drug is administered is given by the function
f(x)=-x^4+13x^3-47x^2+99x
How many hours after the drug is adminstered will it be eliminated from the bloodscream?
I used x=-b/2a and came up with 6. The answer was incorrect.
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
x=-b/2a is for the axis of symmetry of a parabola __ highest order term is squared
factoring __ f(x)=(x)(-x^3+13x^2-47x+99)
factors of 99 __ ±1, ±3, ±9, ±11, ±33, ±99 __ testing the factors shows 9 as a solution
RELATED QUESTIONS
the concentration in part per million, of a particular drug in a patient blood x hours... (answered by stanbon)
A drug is administered to a patient every 4 hours. The patient's metabolism cause the... (answered by CPhill)
A drug is administered to a patient every 4 hours. The patients metabolism causes the... (answered by Theo)
A drug is administered to a patient, and the concentration of the drug in the... (answered by CubeyThePenguin)
A drug is administered to a patient and the concentration of the drug in the bloodstream... (answered by robertb)
A drug is administered to a patient and the concentration of the drug in the bloodstream... (answered by jim_thompson5910)
The remaining concentration of a drug in a person’s bloodstream is modeled by the... (answered by Theo)
The remaining concentration of a drug in a person’s bloodstream is modeled by the... (answered by math_tutor2020,josgarithmetic)
The percent of concentration of a drug in the bloodstream x hours after the drug is... (answered by Alan3354)