The US postal service delivered 7.14 x 10^10
pieces of mail in the month of December and 3.21 x 10^10
in the month of January. What is the total mail delivered for these two months?
To find the total mail delivered for December and January, you need to add the mail delivered in each month.
Total mail delivered = 7.14 x 10^10 + 3.21 x 10^10
Total mail delivered = 10.35 x 10^10
Total mail delivered = 1.035 x 10^11
Therefore, the total mail delivered for December and January is 1.035 x 10^11 pieces.