Solve the problem.A rectangular enclosure must have an area of at least 7200 yd2. If 340 yd of fencing is to be used, and the width cannot exceed the length, within what limits must the width of the enclosure lie?

A. 0 ? w ? 80
B. 80 ? w ? 90
C. 80 ? w ? 85
D. 85 ? w ? 90


Answer: C

Mathematics

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Find the derivative of the function.y = (x + 1)2(x2 + 1)-3

A.
B.
C.
D.

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Estimate the slope of the tangent line to the curve at the given point.

A. 3
B.
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Write in radical form. Assume all variables represent positive real numbers.m8/3

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