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. (1 point)

Answer 1

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

Number of pieces of mail = 1.52 x 10^(10)
Cost of each stamp = $0.55

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

To multiply these numbers, we multiply the coefficients and add the exponents of 10:

1.52 x 0.55 x 10^(10)

Multiplying the coefficients gives us:

0.836

And adding the exponents gives us:

10^(10)

Therefore, the total cost in dollars to deliver all the pieces is:

0.836 x 10^(10) or 8.36 x 10^(9)