Evaluate the expression.

A. -9
B. 3
C. 20
D. 29

Answer: D

Mathematics

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Differentiate the function.r(t) = (8t2 + 15)i + j

A. r'(t) = (16)i + j
B. r'(t) = (16t)i + j
C. r'(t) = (16t)i - j
D. r'(t) = i + (16t)j

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x? = x(0.02 ? 0.0002x ? 0.0006y) , y? = y (0.01? 0.0007x ? 0.0001y)

What will be an ideal response?

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Find a rectangular equation for the plane curve defined by the parametric equations.x = ln t, y = t, for t in (0, ?)

A. y = ln x B. ex = ln y C. x = ey D. y = ex

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Solve the problem.The sum of two consecutive integers is -271. Find the larger integer.

A. -134 B. -137 C. -135 D. -136

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Mathematics