Answer:
C, $30
Step-by-step explanation:
The unit rate is $2.5.
If you divided 10 by 4, 15 by 6, 20 by 8, etc, they all give you the unit rate, 2.5.
In order to find the cost of 12 pounds, you multiply the unit rate by 12.
2.5 * 12 is 30
Hope this helps :)
