7. Alex earned scores of 60, 74, 82, 87, 87, and 94 on his
first six algebra tests. What is the relationship between the
measures of central tendency of these scores?

(1) median < mode < mean (3)
mode < median < mean

(2) mean < mode < median (4)
mean < median < mode

8 The New York Volleyball Association invited 64 teams to
compete in a tournament. After each round, half of the teams
were eliminated. Which equation represents the number of teams,
t, that remained in the tournament after r rounds?"

(1) t = 64(r)^{0.5} (3) t
= 64(1.5)^{r}

(2) t = 64(–0.5)^{r} (4) t = 64(0.5)^{r'}

9 The expression 9x^{2} – 100 is equivalent to

(1) (9x – 10)(x + 10) (3) (3x – 100)(3x
– 1)

(2) (3x – 10)(3x + 10)
(4) (9x – 100)(x + 1)

10 What is an equation of the line that passes through the points (3,–3) and (–3,–3)?

(1) y = 3 (3) y = –3

(2) x = –3 (4) x = y

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