Find the area of the surface generated by revolving the curve about the indicated axis. y = 
, 0.5 ? x ? 1.5; x-axis
A. 5?
B. 3?
C. ?
D. 4?
Answer: D
Mathematics
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Find an exponential model for the following data set. Round your answer to two decimal places. t 0 2.13 4.26 6.39 y 6.09 8.35 11.45 15.71?
A. 
B. ?
C. ?
D. ?
Mathematics
Evaluate.(-1)15
A. 15 B. -15 C. 1 D. -1
Mathematics
Identify the following as an experiment or an observational study.A researcher obtained a random sample of women with children and a random sample of women without children and compared the rates of clinical depression in the two groups.
A. Observational study B. Experiment
Mathematics
Test the equation for symmetry with respect to the given axis, line, or pole.r cos ? = 4;
the polar axis
A. has symmetry with respect to polar axis B. may or may not have symmetry with respect to polar axis
Mathematics