Answer:
the cost is 21$, and it weighs 1 pound.
Step-by-step explanation:
Answer:
29/12
Step-by-step explanation:

7 * 3 / 4 *3 = 21/12
2 * 4 / 3 * 4 = 8/12

Hope this helps!
Step-by-step explanation:
2+2=4
two plus two is four
The US postal service delivered 7.14 x 1010 pieces of mail in the month of December 7.14 x 1010=7211.4
3.21 x 1010 in the month of January. 3242.1
What is the total mail delivered for these two months?
7211.4
+ 3242.1
__________
10453 .5 TOTAL MAIL