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In the diagram above, what is the length of side FG?

In the diagram above, FDCB is a rectangle. Line ED is six units long, line AB is ten units long, and the
measure of angle ECD is 60º.

What is the length of line AE?

• A.
• B.
• C.8
• D.20
• E.

For what value of x is the equation 8/x = 6/12?

• A.16
• B.24
• C.8
• D.12

Which of the following sets of numbers contains all and only the roots of the equation f(x) = x 3 + 7 x 2 - 8 x ?

• A.{0, 8, -1}
• B.{0, -1, -8, 1, 8}
• C.{-8, 1}
• D.{0, -8, 1}
• E.{8, -1}

If the height of a cylinder is doubled and the radius of the cylinder is halved, the volume of the cylinder:

• A.becomes half as large.
• B.becomes twice as large.
• C.becomes four times larger.
• D.becomes four times smaller.
• E.remains the same.