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 $2.04

Total amount Josiah can expect to pay for postage is:

$ 1.84

Step-by-step explanation:

cost of mailing one letter in the country is:

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

The first weighs 2.9 ounces, and the second weighs 4.1 ounces.

Cost of mailing first letter=0.42+0.20(2.9-1)

                                         =0.42+0.38

                                         =$ 0.8

Cost of mailing second letter=0.42+0.20(4.1-1)

                                               =0.42+0.62

                                               =$ 1.04

total cost=$(0.8+1.04)

              =$ 1.84

Hence, total amount Josiah can expect to pay for postage is:

$ 1.84

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

where is abdul's work? don't see that anywhere posted : /

step-by-step explanation: