Arithmetic Sequence
Source:
January 9, 2009
arithmetic sequence
Problem Statement
The first four terms in an arithmetic sequence are x \plus{} y, x \minus{} y, , and , in that order. What is the fifth term?
(A)\ \minus{}\frac{15}{8} \qquad
(B)\ \minus{}\frac{6}{5} \qquad
(C)\ 0 \qquad
(D)\ \frac{27}{20} \qquad
(E)\ \frac{123}{40}