Answer:
20 animals
Step-by-step explanation:
-Each animal has a pair of eyes.
-Since Felicity is an animal too, her set of eyes will be added during calculation.
-The weasel being looked at has a pair of eyes too.
-let x be the number of animals:
[tex]Eyes_{total}=18\ Pairs +\ Felicity's+Weasel's\\\\=18+1+1\\\\=20\\\\Number \ of \ Animals= \frac{20\ pairs}{1\ pair}= 20\ animals[/tex]
Hence, there are 20 animals in the forest.