## Intermediate Algebra: Connecting Concepts through Application

$-7.75, -1.5, 4.75, 11, 17.25, 23.5, . . .$ $\frac{a_2}{a_1}=\frac{-1.5}{7.75}=0.1935...=r$ $ra_2=-0.2903...\neq a_3$ So the sequence is not geometric.