Tore A sells boxes of rice for $2.50 each.

Store B sells rice by the pound for $2.50 per pound.

The cost of an amount of rice at either store can be modeled by the function
c
c
(
n
n
) = 2.5
n
n
, where
n
n
is the number of boxes for Store A and
n
n
is the number of pounds of rice for Store B.

The domain of
c
c
(
n
n
) = 2.5
n
n
is all the real numbers.

For each store, drag the restriction needed on values of
n
n
for
c
c
(
n
n
) to model each situation.