Question

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?
a. 1.035 x 10^9
b. 1.035 x 10^10
c. 1.035 x 10^-10
d. 1.035 x 10^11
e. 10.35 x 10^11

Answers

GPT 3.5
The total mail delivered for these two months can be found by adding the mail delivered in December and January:

7.14 x 10^10 + 3.21 x 10^10 = 10.35 x 10^10

Therefore, the total mail delivered for these two months is 1.035 x 10^11, which corresponds to answer choice d. 1.035 x 10^11.

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