At the moment a certain medicine is injected, it’s concentration in the bloodstream is 120 milligrams per liter. From that momen
1 answer:
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Answer:
D
Step-by-step explanation:
The function will be zero when the numerator is equal to 0. So, set the numerator equal to 0 and solve:
I will use the quadratic formula:
Therefore, x = 9 is a 0. Let's check with subtracted root now:
It appears 0 is also a root.
Therefore, the answer is D.