Solve the problem.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 functionf(x) = -x4 + 12x3 - 39x2 + 56xHow many hours after the drug is administered will it be eliminated from the bloodstream.
A. 7 hours
B. 8 hours
C. 15 hours
D. 6 hours
Answer: B
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A child has an enormous jar in which she has been saving all of her spare change. In order to determine exactly how much money she has in the jar, she dumps all of the coins on the floor and counts them. Under the watchful eye of her mother, she counts 180 pennies, 120 nickels, 100 dimes, and 80 quarters.The sampling proportion in this survey is
A. 100%. B. 180/480. C. 80/480. D. unknown. E. none of these
Solve the problem.Ms. Patterson proposes to give her daughter Claire an allowance of $0.10 on the first day of her 12-day vacation, $0.20 on the second day, $0.40 on the third day, and so on. Write an equation of a sequence whose terms correspond to Claire's potential allowance. Find the allowance Claire would receive on the last day of her vacation.
A. an = 0.10(2)n-1; $204.80 B. an = 0.10 + 2n-1; $2048.10 C. an = 0.10n; $1.20 D. an = 0.10(2)n; $409.60
Use the Pythagorean Theorem to find the length of the missing side.Then find the indicated trigonometric function of the given angle. Give an exact answer with a rational denominator.Find csc ?.
A. 
B. 
C. 
D. 
Graph the function. Describe its position relative to the graph of the indicated basic function.f(x) = 5 + log2x; relative to f(x) = log2x
A. Moved up 5 units
B. Moved down 5 units
C. Moved down 5 units
D. Moved up 5 units