Solve the system of equations by graphing. If the system is inconsistent or the equations are dependent, say so.3x + y = 183x + y = 33
A. {(x, y)|3x + y = 18} (dependent equations)
B. {(15, -27)}
C. {(9, 9)}
D. ? (inconsistent system)
Answer: D
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Use the trapezoidal rule and Simpson's rule to approximate the value of the definite integral. Compare your result with the exact value of the integral. Please give the answer to four decimal places.
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Trapezoidal rule:__________
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Simpson's rule: __________
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Exact value: __________
What will be an ideal response?
Solve the problem.The concentration C (arbitrary units) of a certain drug in a patient's bloodstream can be modeled using 
where t is the number of hours since a 500 milligram oral dose was administered. Using the TABLE feature of a graphing utility, find the time at which the concentration of the drug is greatest. Round to the nearest tenth of an hour.
A. 5.2 hours B. 6 hours C. 6.7 hours D. 7.5 hours
The function Y2 is defined as Y1 + k for some real number k. Based upon the given information about Y1 and Y2, find k.
A. -4 B. 4 C. -5 D. 5
Select the correct graph of the function 
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A. ?
B. ?
C. ?
D. ?
E. ?
