Determine the vertex of the graph of the parabola.y = 3x + 2x2 - 2
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.In a chemical reaction, the rate at which the amount of a reactant changes with time is proportional to the amount present, such that 
, when t is measured in hours. If there are 
of reactant present when t = 0, how many grams will be left after 
? Give your answer to the nearest tenth of a gram.
A. 2.2 g B. 6.7 g C. 4.5 g D. 0.1 g
Subtract in the indicated base.324 - 234
A. 104 B. 24 C. 94 D. 34
Solve.The function N(t) = 
, t ? 8gives the body concentration N(t), in parts per million, of a certain dosage of medication after time t, in hours.Graph the function on the interval [8, ?) and complete the following:N(t) ? 
as t ? ?.
A. 
N(t) ? 0 as t ? ?.
B. 
N(t) ? 1 as t ? ?.
C. 
N(t) ? 0.071 as t ? ?.
D. 
N(t) ? 0.083 as t ? ?.
Write the complex number in rectangular form.5
A. 
- 
i
B. - 
+ 
i
C. 
- 
i
D. - 
+ 
i