6. If \[Y\] is the midpoint of \[XZ\], which of the following must be true?
I. \[YZ = \frac{1}{2}XZ\]

II. \[\frac{1}{2}XZ = 2XY\]

III. \[2XY = XZ\]

(A) I only
(B) II only
(C) III only
(D) I and II
(E) I and III

7. If \[2r = 5s\] and \[5s = 6t\], what does r equal in terms of \[t\]?
(A) \[\frac{12}{25}t\]
(B) \[\frac{6}{5}t\]
(C) \[3t\]
(D) \[15t\]
(E) \[30t\]

8. A total of \[k\] passengers went on a bus trip. Each of the \[n\] buses that were used to transport the passengers could seat a maximum of \[x\] passengers. If one bus had 3 empty seats and the remaining buses were filled, which of the following expresses the relationship among \[n, x\], and \[k\]?
(A) \[nx - 3 = k\]
(B) \[nx + 3 = k\]
(C) \[n + x + 3 = k\]
(D) \[nk = x + 3\]
(E) \[nk = x - 3\]
p3sec1.09
9. In the figure above, line \[\ell \] is parallel to line \[m\]. What is the value of \[x\]?
(A) 150
(B) 140
(C) 130
(D) 110
(E) 100

\[3x^2 < (3x)^2\]

10. For what value of \[x\] is the statement above FALSE?
(A) \[-3\]
(B) \[0\]
(C) \[\frac{1}{3}\]
(D) \[1\]
(E) For no value of \[x\]

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