Solve the problem.Find and simplify f(a + h) - f(a) given f(x) = x2 - 2x.

A. 2ah + h2 - 2h + a2
B. 2ah + h2 - 2h
C. ah + h2 - 2h
D. 2ah + h2 - 2

Answer: B

Mathematics

Write the expression in the standard form a + bi.(9 + 7i)(3 - 4i)

A. -28i2 - 15i + 27 B. 55 - 15i C. -1 + 57i D. 55 + 15i

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Mathematics

Find the requested probability.A child rolls a 6-sided die 6 times. What is the probability of the child rolling no more than three twos?

A. .9649 B. .6774 C. .3812 D. .9913

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Mathematics

Find an equation for the parabola described.Vertex at (4, 6); focus at (7, 6)

A. x = t² + 4, y = t + 6
B. x = t² + 4, y = t + 6
C. x = - t² + 4, y = t + 6
D. x = t² - 4, y = t - 6

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Mathematics

Evaluate the integral.

A. 42 B. 4 C. -44 D. 1

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Mathematics