Evaluate the expression, given x = -2, y = 3, and a = -4.-x2 - (5y2 - 7x)

A. 55
B. -63
C. -55
D. -27

Answer: B

Mathematics

Solve. Remember to insert units when writing your answer.An oil drum holds 40 gal of oil. If 16 gal and 1 qt have been removed, how much oil remains?

A. 24 gal 3 qt B. 23 gal 3 qt C. 24 gal 1 qt D. 23 gal 7 qt

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Mathematics

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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Mathematics

Find an equation of a polynomial function of least degree having the given complex zeros, intercepts, and graph.f(x) has complex zero 5i

A. f(x) = (x² - 25)
B. f(x) = (x² + 25)
C. f(x) = (x² + 25)
D. f(x) = (x² + 5)

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Mathematics

Solve the problem.If f(x) = int(4x), find f(-1.8).

A. -2 B. -1 C. -8 D. -7

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Mathematics