In a given year, about 1.52*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

The total cost to deliver all the pieces of first class mail is calculated by multiplying the number of pieces of mail by the cost of a stamp:

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

Therefore, the total cost to deliver all the pieces of first class mail in the U.S. is $8.36*10^9.