Solve the problem.The concentration of a drug in the bloodstream, measured in milligrams per liter, can be modeled by the function, 
where t is the number of minutes after injection of the drug. When will the drug be at its highest concentration? Approximate your answer rounded to two decimal places.
A. at the time of injection
B. t = 4 minutes after the injection is given
C. t = 0.55 minutes after the injection is given
D. t = 3.65 minutes after the injection is given
Answer: C
Mathematics
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Solve the problem.The Banzhaf power index of player P4 in the weighted voting system 
is
A. 0
B. 
C. 
D. 
E. none of these
Mathematics
Write the opposite of the polynomial and simplify your result.-8x3 + 4x2 + 15
A. 8x3 - 4x2 - 15 B. -8x3 + 4x2 + 15 C. -8x3 - 4x2 - 15 D. 8x3 - 4x2 + 15
Mathematics
Factor completely. If the polynomial is prime, so state.8x2 + 8x - 16
A. (2x + 4)(4x - 4) B. (2x - 4)(4x + 4) C. (4x + 4)(2x - 4) D. (x + 4)(8x - 4)
Mathematics
Determine the value that 5 represents in the given number.2,357,481
A. five B. fifty thousand C. ten thousand D. fifty
Mathematics