Round as indicated.865 to the nearest ten

A. 880
B. 970
C. 860
D. 870


Answer: D

Mathematics

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Solve the problem.The cost in millions of dollars for a company to manufacture x thousand automobiles is given by  Find the output at the vertex of the parabola (the number of automobiles that must be produced to minimize the cost).

A. 10 thousand automobiles B. 5 thousand automobiles C. 20 thousand automobiles D. 125 thousand automobiles

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Find the area of the region specified in polar coordinates.The smaller loop of the curve r = 6 + 12 sin ?

A. 18(2? + 3)
B. 9(2? - 3)
C. 9(2? + 3)
D. 18(2? - 3)

Mathematics

Solve the problem. Where appropriate, round to the nearest tenth of a percent.The graph below shows the number of internet host sites for five consecutive years. Find the percent increase in host sites from 2008 to 2009. Round to the nearest percent.20082009201020112012Year

A. 0.8200% B. 1.0200% C. 102% D. 82%

Mathematics

Determine a window that will provide a comprehensive graph of the polynomial function.y = 3x3 - 26x2 + 18x - 47

A. [-10, 10] by [-150, 150] B. [-8, 10] by [-100, 300] C. [-3, 10] by [-400, 100] D. [-5, 5] by [-500, 100]

Mathematics