Answer:
$1.84
Step-by-step explanation:
We are given that a letter up to 1 ounce requires postage in the amount of $0.42, and each additional ounce (or fraction of an ounce) has an additional cost.
The function which represents the situation:
Now Joseph has two letters .
The weight of first letter = 2.9 ounces
Cost of first letter =
=
Now , second letter weighs 4.1 ounces
So, cost of second letter =
=
Thus the total amount Josiah can expect to pay for postage = $0.8+$1.04
=$1.84
Hence the total amount Josiah can expect to pay for postage is $1.84