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
 

1         2         3         4        

1         2         3         4        


3 Written in simplest factored form, the binomial 2x2 - 50 can be expressed as

(1) 2(x - 5)(x - 5)        (3) (x - 5)(x + 5)
(2) 2(x - 5)(x + 5)        (4) 2x(x - 50)
 

1         2         3         4        

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.
 

1         2         3         4        

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

1         2         3         4