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Algebra Word Problems

1. The area of a square is 82 ft2. Find the length of the side to the nearest hundredth.

2. How long must a guywire be to run from the top of a 18 ft pole to a point on the ground 12 feet away?

3. A picture is 2.5 m long by 2.0 m wide. It is held by a frame of uniform width around its outside edge. If the picture itself (without the frame) is 4 m2, what is the width of the frame to the nearest centimeter

4. Suppose the cost C, in dollars, of producing x tables is given by the equation
C = 2x2 - 40x + 2400. How many tables can be produced for $4650?

Please help with these problems.

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$2.19