1.1 Exercise 9

Determine whether each of the following numbers is rational or irrational. If it is rational, determine whether it is a terminating or repeating decimal.

1. ⓐ $\frac{7}{77}$
2. ⓑ $\sqrt{81}$
3. ⓒ $4.27027002700027 \ldots$
4. ⓓ $\frac{91}{13}$
5. ⓔ $\sqrt{39}$