Set up an integral for the area of the surface generated by revolving the given curve about the indicated axis.y = sinx, 0 ? x ? ?/4; x-axis
A. 
dx
B. 2?
dx
C. 
dx
D. 2?
dx
Answer: D
Mathematics
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Simplify.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. The linear model for this data is 
where x is number of hours studied and y is score on the test. Use this model to predict the score on the test of a student who studies 13 hours. 
A. 76.2 B. 86.2 C. 86.8 D. 81.2
Mathematics
Answer the question.Why is the answer (x2 - 16)(x2 + 16) not the correct solution to the instruction to factor the polynomial x4 - 256 completely?
What will be an ideal response?
Mathematics
Identify the equation as a parabola, circle, ellipse, or hyperbola.y2 = 121 - x2
A. Circle B. Ellipse C. Parabola D. Hyperbola
Mathematics