Mulan earns $20 for walking 4 dogs. How much would she earn for each dogs?

$5 per dog

Explanation:

Divide the amount of money by the number of dogs:

20/4

= 5

So, she would earn $5 per dog

freedom of speech is also protected by the 1 amendment.

explanation:

here is pretty much what the 1st amendment says:

congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.