In a given year, about 1.52 times 10^10 pieces of first-class mail are delivered in the U.S. If each piece of mail carries a stamp costing $0.55, what is the total cost in dollars to deliver all the pieces? Write the answer in scientific notation, expressed to the exact decimal place.

Answer 1

To find the total cost, we multiply the number of pieces of mail by the cost of each stamp.

Total cost = (1.52 x 10^10) * $0.55
Total cost = 8.36 x 10^9 dollars

Therefore, the total cost to deliver all the pieces of mail is $8.36 x 10^9.