Answer:
x 3 or 3 x
or
d
x 3 or 3 x
d
where
or
d
represents the number of dogs
x
3 or 3 x or
d x 3 or 3 x d where or
d represents the number of dogs x
3 or 3 x or
d x 3 or 3 x d where or
d represents the number of dogs