Question

In a certain country, 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 below represents the cost of mailing one letter in this country.

f(c)=0.42 + 0.20[x-1]

Josiah has two letters. The first weighs 2.9 ounces, and the second weighs 4.1 ounces. What is the total amount Josiah can expect to pay for postage?
$1.62
$1.64
$1.84

Answer 1

$1.84

Explanation:

Answer 2

$1.84

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:

`f(c)=0.42 + 0.20[x-1]`

Now Joseph has two letters .

The weight of first letter = 2.9 ounces

Cost of first letter =
`0.42 + 0.20[2.9-1]`

=
`0.8`

Now , second letter weighs 4.1 ounces

So, cost of second letter =
`0.42 + 0.20[4.1-1]`

=
`1.04`

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