Subtract.188 - 19
A. 269
B. 159
C. 181
D. 169
Answer: D
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Write the first five terms of the arithmetic sequence with the first term a1 and common difference d. a1 = 12, d = -6
A. 12, 18, 24, 30, 36 B. -12, -18, -24, -30, -36 C. 1, 12, 18, 24, 30 D. 12, 6, 0, -6, -12
Evaluate the root function at the given x-value. Round to the nearest hundredth when appropriate.f(x) = 
, x = 0
A. 5 B. 16 C. 3 D. 4
Find A-1 if it exists.A = 
A. 
B. 
C. 
D. Does not exist
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 = 3.65 minutes after the injection is given D. t = 0.55 minutes after the injection is given