Multiple-Choice Exercise From the New York State Education Department. Regents High School Examination Internet. Available from http://www.nysedregents.org; accessed January 22, 2012.; All rights reserved. No commercial, for-profit use of this material is allowed. E-mail comments and questions to Tami Maloney.
Choose the correct answer for each question.
What is the common difference of the arithmetic sequence 5, 8, 11, 14?
150
165
330
518
{−3, 2}
{−2, 3}
{−3, 0, 2}
{−2, 0, 3}
Twenty different cameras will be assigned to several boxes. Three cameras will be randomly selected and assigned to box A. Which expression can be used to calculate the number of ways that three cameras can be assigned to box A?
Which relation is not a function?
{1, 3}
{−1, 3}
{−1, −3}
{1, −3}
{1}
{0}
{1, 6}
{2, 3}
1
−1
i
−i
Which value of r represents data with a strong negative linear correlation between two variables?
−1.07
−0.89
−0.14
0.92
Mrs. Hill asked her students to express the sum 1 + 3 + 5 + 7 + 9 + . . . + 39 using sigma notation. Four different student answers were given. Which student answer is correct?
What is the formula for the nth term of the sequence 54, 18, 6, . . .?
