SparkNotes: SAT Power Tactics

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Practice Set 2: Multiple-Choice Math

Read through the items and choose the order in which you’ll attempt them. When you’re done, compare your decision-making process with ours.

1.	If a²b = 1, then 3a⁴b² =

2.	What is the midpoint of the line segment described by (1, 4) and (3, 7)?

3.	Angles a and c are supplementary angles. What is 2(a + c)?

4.	What fraction of 45 is 60% of 50?

5.	Two six-sided dice are rolled, one after the other. The first roll shows an odd number. What is the probability that the second die shows an odd number?

6.	If x² = –1 and , then the least positive integer value of y is

7.	Suppose set S = {2, 4, 4, 6, 7, 13}. Which of the following statements are true of S?
	I. The mean of S is 6. II. The median of S is greater than the mode of S. III. The mean and mode of S are elements of S.

8.	Seth works at a museum for $8 an hour and makes $256 a week. He is given a 20% raise. Assuming he works the same number of hours per day, how much more money does he make a week after getting a raise?

9.	If the equation of a line is y = 2x + 9, what is the equation of the line perpendicular to it that has a y-intercept of 10?

10.	If x^-2 = 25, what is the value of ?

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