Write as a percent. Round the percent to the nearest tenth if necessary.
A. 140%
B. 114.3%
C. 11.4%
D. 81.6%
Answer: B
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Express the area of the region bounded by the given line(s) and/or curve(s) as an iterated double integral.The curve 
and the lines 
and 
A. 
B. 
C. 
D. 
An open rectangular box having a volume of 62.5in3 is to be constructed from a tin sheet. Find the dimensions of such a box if the amount of material used in its construction is to be minimal.
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Hint: Let the dimensions of the box be x by y by z. Then, xyz = 108 and the amount of material used is given by S = xy + 2yz + 2xz. Show that
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Minimize f(x, y)
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x = __________
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y = __________
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z = __________
What will be an ideal response?
Find an equation of a parabola satisfying the given conditions.Focus at (0, -10), directrix y = 10
A. x2 = -10y B. y2 = -40x C. y = -40x2 D. x2 = -40y
Solve the problem.Gillian has $10,000 to invest in a mutual fund. The average annual rate of return for the past five years was 12.25%. Assuming this rate, determine how long it will take for her investment to double.
A. 4 yr B. 3 yr C. 12 yr D. 6 yr