Question

I REALLY need help with this question please.

Answer 1

Answer:

375

Step-by-step explanation:

because if you look at the question 3\4 is 1 hour with the aspren 500 after 2 hours you 2 the ammount i think

Answer 2

Answer: Choice D) 281.25 mg

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Work Shown:

Plug in t = 2 and we get the following

$a = 500*\left(\frac{3}{4}\right)^{t}\\\\a = 500*\left(\frac{3}{4}\right)^{2}\\\\a = 500*\left(0.75\right)^{2}\\\\a = 500*0.5625\\\\a = 281.25$

The answer is choice D. There are 281.25 mg of aspirin in the bloodstream after 2 hours.

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Side notes:

• The 500 represents the initial amount of aspirin (in mg) in the bloodstream. This is the amount when t = 0.
• The 3/4 converts to 0.75; when solving 1+r = 0.75, we get r = -0.25, and this shows a 25% reduction in aspirin each time t goes up by 1. Every hour, the amount of aspirin in the bloodstream reduces by 25%