Write the inequality in interval notation.3.3 < x ? 5.7
A. (-?, 3.3] ? (5.7, ?)
B. [3.3, 5.7)
C. (3.3, 5.7]
D. (-?, 3.3) ? [5.7, ?)
Answer: C
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Use symmetry to evaluate the integral.
A. 
B. 
C. 
D. 0
Solve the problem.A team of engineers is testing an experimental high-voltage fuel cell with a potential application as an emergency back-up power supply in cell phone transmission towers. Unfortunately, the voltage of the prototype cell drops with time according to the equation 
where V is in volts and t is the time of operation in hours. The cell provides useful power as long as the voltage remains above 5.1 volts. Use Newton's method to find the useful working time of the cell to the nearest tenth of an hour (that is, solve V(t) = 5.1 volts). Use t = 7 hours as your initial guess and show all your work.
What will be an ideal response?
Identify the property that allows you to conclude that the triangles are congruent. Or, if such a conclusion cannot be made, answer "None."
A. ASA B. SSS C. SAS D. None
Evaluate the discriminant for the equation. Then use it to predict the number of distinct solutions, and whether they are rational, irrational, or nonreal complex.4 + 7z2 = 8z
A. Two distinct irrational solutions B. Two distinct rational solutions C. Two distinct nonreal complex solutions D. One rational solution (a double solution)