Solve the problem.The amount of alcohol in the bloodstream, A, declines at a rate proportional to the amount, that is, 
. If 
for a particular person, how long will it take for his alcohol concentration to decrease from 0.10% to 0.05%? Give your answer to the nearest tenth of an hour.
A. 2.3 hr
B. 1.2 hr
C. 1.7 hr
D. 0.4 hr
Answer: B
Mathematics
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Provide an appropriate response.Can anything be said about the graph of a function y = f(x) that has a second derivative that is always equal to zero? Give reasons for your answer.
What will be an ideal response?
Mathematics
Subtract.5,855
A. 3,353 B. 3,421 C. 5,421 D. 3,413
Mathematics
A projectile is fired with an initial speed of 200 m/s and angle of elevation 60°. Find the range of the projectile. Select the correct answer.
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Mathematics
Write the expression as a logarithm of a single expression. Assume that variables represent positive numbers.4 logbq - logbr
A. logb
B. logb
C. logb(q4 - r)
D. logbq4 ÷ logbr
Mathematics