Simplify the radical expression. Assume that all variables represent positive real numbers.

A. x3
B. x4
C. x4
D. x5

Answer: C

Mathematics

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Find the area or volume.Find the volume of the solid generated by revolving the region in the first quadrant under the curve  bounded on the left by x = 1, about the x-axis.

A. 8?
B. ?
C. 64?
D. ?

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Mathematics

Solve the problem.In 1999 the stock market took big swings up and down. A survey of 998 adult investors asked how often they tracked their portfolio. The table shows the investor responses. What is the probability that an adult investor tracks his or her portfolio daily? 

A. 26.75% B. 24.52% C. 29.26% D. 22.95%

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Mathematics

Combine like terms whenever possible. Write the result with descending powers.-7m6 - 3m6

A. -10m6 B. Cannot be simplified C. -60m D. -10m12

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Mathematics

Add or subtract.(6 - 3i) + (3 + 9i)

A. -9 - 6i B. 9 + 6i C. 3 + 12i D. 9 - 6i

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Mathematics