Chapter 4 - Writing Linear Functions - 4.6 - Arithmetic Sequences - Monitoring Progress - Page 210: 3

$3, 2\frac{3}{4}$ and $2\frac{1}{2}$.

Each term is $\frac{1}{4}$ less than the previous term. So, the common difference is $-\frac{1}{4}$. Add $-\frac{1}{4}$ to a term to find the next term. The next three terms are $3, 2\frac{3}{4}$ and $2\frac{1}{2}$.