Simplify the expression. Assume all variables represent positive real numbers.8  + 5xy 

A. 23 xy2
B. 13x2y3
C. 13xy3
D. 23x2y2

Answer: A

Mathematics

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Find the standard equation of the ellipse shown in the figure. Identify the coordinates of the vertices, endpoints of the minor axis, and the foci.

A.  +  = 1; V(0, ±4); U(±3, 0); F(±4, 0)
B.  +  = 1; V(0, ±4); U(±3, 0); F(0, ±)
C.  +  = 1; V(±3, 0); U(0, ±3); F(±5, 0)
D.  +  = 1; V(±4, 0); U(0, ±3); F(±, 0)

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Go through the Babylonian algorithm one time to approximate the given square root. Give two decimal places in your answer.

A. 5.52 B. 5 C. 5.66 D. 5.67

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Find the product.(15x4 - 25x2 + 30x)

A. 15x4 - 25x2 + 6x + 9 B. 3x5 + 135x4 - 5x3 - 219x2 + 270x C. 3x5 - 135x4 + 5x3 + 219x2 - 270x D. 3x4 + 135x3 - 5x2 + 276x

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Sketch the graph of the power function by hand, using a calculator only to evaluate y-values for your chosen x-values. On the same axes, graph y = x2 using a dotted line for comparison. In each case, x ? 0.f(x) = x2.6

A.

B.

C.

D.

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Mathematics