1. A region within a semicircle is shaded. If D is the diameter of the semicircle, what is the area of the shaded region?   πD2/8   πD2/4   πD2/16   3πD2/8   3πD2/16   Hint Hint       2. If c carpenters can make t tables in d days, how many tables can 10 carpenters, working at the same rate, make in 30 days?   tc/(3d)   300cd/t   300t/(cd)   cd/(300t)   3tc/d   Hint       3. If p = q + 1/2, q = 3r + 1/2, and r = 5s + 1/3, what does s equal in terms of p?   (p + 1)/15   (p − 2)/5   (p − 2)/15   (p − 1)/15   (p − 1)/5   Hint       4. Your math marks decreased by 60% from the first quiz to the second quiz. If your marks in the third quiz were identical to those in the first quiz, by what percent did your marks increase from the second quiz to the third quiz ?   60%   100%   140%   150%   250%   Hint       5. If 12x − 4y = 12, 4y − 11z = 17, and 11z − 4x = 11, what is the value of x?   −8   5   40   cannot be determined   8   Hint       6. What is the smallest of five consecutive odd integers whose sum is S?   (S − 20)/5   (S + 20)/5   5S − 20   5S + 20   (S + 12)/5   Hint       7. Which of the following is not equivalent to 5/8?   35/56   0.625   62.5%   40/64   36/48   Hint