In a given year, about 1.52×1010 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:

1.52×10^10 pieces * $0.55/piece = $8.36×10^9

Therefore, the total cost in dollars to deliver all the pieces is $8,360,000,000.