Evaluate the expression.x2 - 4yz for x = -5, y = 2, and z = 4

A. -7
B. -3
C. -17
D. -13

Answer: A

Mathematics

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Find the value of the x-coordinate of the points at which the functions intersect, and approximate the area of the region described. Round to two decimal places when necessary.f(x) = sinh x, g(x) = tanh x; the region bounded by the graphs of f, g, and ln 6

A. x = 0; 1 B. x = 0; 0.96 C. x = 0; 0.11 D. x = 0; 0.85

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Find the indicated derivative.Find y " if y = -5 cos x.

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Use the power property to rewrite the expression.logx 

A. logx 
B. 4 + logx y
C. logx y
D. 4logx y

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