Question

A store sells 24 greeting cards for $12. Which is NOT a unit rate to describe this sale?

Answer 1

B,C,D are not a unit rate

Answer 2

A unit rate is the cost per 1 unit of product
12 dollars for 24 cards
0.50 dollars for 1 card
that should be the only answer
all else are false
ACD are false
but if you can only pick 1, pick C since it is per 5 dollars