Determine whether the correspondence is a function.Domain: A set of numbersCorrespondence: Multiply each number by 7 and then subtract 9.Range: A set of numbers.

A. No
B. Yes


Answer: B

Mathematics

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Find the curvature of the space curve.r(t) = -9i + (t + 2)j +(ln(cos t) + 9)k

A. ? = csc t B. ? = sec t C. ? = sin t D. ? = cos t

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Find the limit

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Simplify the expression. Assume that variables represent nonzero numbers.(-5a)3

A. -15a3 B. -15a C. -125a3 D. -125a

Mathematics

Write the expression in the standard form a + bi.

A.  + i
B.  - i
C.  + i
D.  - i

Mathematics