Respuesta :

twha4273

Answer: 5.52

Step-by-step explanation:

First you divide 8.28 by 18 to find the rate or in this case the cost per stamp.

8.28/18=0.46

Then multiply 0.46*12.

0.46*12= 5.52

Hope this helps :)
The answer is 5.52. Hope this helps!