The US postal service delivered 7.14 * 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?

Question

A 1.035 * 10 ^ 9

B 1.035 * 10 ^ 10

C 1.035 * 10 ^ - 10

D 1.035 * 10 ^ 11

E 10.35 * 10 ^ 11

Answer 1

The total mail delivered for December and January is calculated by adding the amount of mail delivered for each month:

7.14 * 10^10 + 3.21 * 10^10 = 10.35 * 10^10

Therefore, the total mail delivered for December and January is 1.035 * 10^11, which is option D.