In a given year, about 1.52 x 10^10 pieces of first-class mail are delivered in the US 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. Express the answer to the exact decimal place
To find the total cost to deliver all the pieces of mail, we multiply the number of pieces of mail (1.52 x 10^10) by the cost of a stamp ($0.55):
1.52 x 10^10 * $0.55 = $8.36 x 10^9
Expressed in scientific notation, the total cost is $8.36 x 10^9.