**1** The perimeter of an equilateral triangle varies directly as the length of
a side. When the length of a side is doubled, the perimeter of the triangle
is

(1) halved (3) multiplied by 3

(2) doubled (4) divided by 3

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**3** Written in simplest factored form, the binomial 2*x*^{2} - 50 can be
expressed as

(1) 2(*x* - 5)(*x* - 5) (3) (*x* - 5)(*x* + 5)

(2) 2(*x* - 5)(*x* + 5) (4) 2*x*(*x* - 50)

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**4** Which statement is logically equivalent to “If I did not eat, then I am
hungry”?

(1) If I am not hungry, then I did not eat.

(2) If I did not eat, then I am not hungry.

(3) If I am not hungry, then I did eat.

(4) If I am hungry, then I did eat.

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**5 **In the accompanying diagram, a circle with radius 4 is inscribed in a
square.

What is the area of the shaded region?

(1) 64-16π (3) 64π - 8π

(2) 16-16π (4) 16 - 8π

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