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

$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

1.84

Step-by-step explanation:

edge 2021

the answer is 5636.7

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.