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 + 8x3 - 23x2 + 28xHow many hours after the drug is administered will it be eliminated from the bloodstream.
A. 4 hours
B. 6 hours
C. 7 hours
D. 11 hours
Answer: A
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Solve the right triangle. If two sides are given, give angles in degrees and minutes.
B = 65.4834°, c = 3,851.3 mGive side lengths to two decimal places.
A. A = 24.5166°; a = 1,661.07 m; b = 3,504.07 m B. A = 24.5166°; a = 1,507.78 m; b = 3,488.77 m C. A = 24.5166°; a = 1,598.12 m; b = 3,504.07 m D. A = 24.5166°; a = 1,598.12 m; b = 3,458.68 m
Rewrite the rational expression with the given denominator.
= 
A. 
B. 
C. 
D. 
Solve the problem. Round interest to the nearest percent and time to the nearest period.If the average annual inflation rate is 3
%, how long would it take to the nearest year for the general level of prices in the economy to triple?
A. 20 years B. 10 year C. 16 years D. 32 years
Find the first term and the common difference.$7.13, $9.73, $12.33, $14.93, . . .
A. a1 = $7.13, d = $7.80 B. a1 = $7.13, d = $2.60 C. a1 = $7.13, d = $1.95 D. a1 = $7.13, d = $7.13