Simplify. Assume that all variables represent nonnegative numbers.3

A. 18x4
B. 18x3
C. 9x4
D. 9x3

Answer: B

Mathematics

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For the smooth curve r(t), find the parametric equations for the line that is tangent to r at the given parameter value r(t) = (3 sin t)i - (8 cos 3t)j +e-7tk ; to = 0

A. x = 3t, y = -8, z = 1 - t B. x = 3t, y = 8, z = 1 + t C. x = 3, y = -8t, z = -7 + t D. x = 3t, y = -8, z = 1 - 7t

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Mathematics

Evaluate the exponential expression.-0.82

A. -0.64 B. 1.92 C. 0.64 D. -1.6

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Mathematics

Solve the problem.If f(x) = 9x3 + 5x2 - x + C and f(-2) = 1, what is the value of C?

A. C = 51 B. C = -53 C. C = -93 D. C = -13

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Mathematics

Select the graph of the polar equation using symmetry, zeros, maximum r-values, and any other additional points. ? ?

A. Symmetric with respect to

?

?



B. Symmetric with respect to

?


C. Symmetric with respect to

?


D. Symmetric with respect to

?


E. Symmetric with respect to

?


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Mathematics