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 function, f(x) = -x4 + 11x3 - 24x2 + 54x. How many hours after the drug is administered will it be eliminated from the bloodstream.
A. 15 hours
B. 6 hours
C. 9 hours
D. 8 hours
Answer: C
Mathematics
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Find the domain and the range for the function.
A. D: All real numbers, R: All real numbers
B. D: 
, R: 
C. D: 
, R: 
D. D: 
, R: 
Mathematics
Solve the problem.The table shows the population of a certain city in various years. The population of the city f(x), in hundreds of thousands, can be modeled by f(x) = axb, where x represents the number of years since 1980. Estimate the population of the city in the year 1994. (You will first need to use regression to estimate the values of a and b).
A. 877,042 B. 1,017,368 C. 982,287 D. 924,486
Mathematics
Solve.-3 - 28 = m - 15
A. -46 B. -16 C. 46 D. 16
Mathematics
What term of the arithmetic sequence is the given number?3.43, 3.93, 4.43, . . . ;20.43
A. 36 B. 32 C. 34 D. 35
Mathematics