Let p and q represent the following simple statements. Then write each compound statement in symbolic form.
p: This is an alligator.
q: This is a reptile.
7. If this is an alligator, then this is a reptile.
8. This is an alligator and this is a reptile.
9. If this is a reptile, then this is an alligator.
10. This is an alligator, if and only if this is a reptile.
11. If this is not an alligator, then it is not a reptile.