Question

The cost to mail a package is $7 for the first 2 pounds and 30 cents for each additional ounce.Which of the following functions represents the cost to mail a package if x is the number of ounces over 2 pounds?

Answer 1

The function that represents the cost to mail a package if x is the number of ounces over 2 pounds is:

`P(x)=0.30x+7`

Explanation:

Let's asume we're already over 2 pounds. This means that we have to pay, at least, $7 for the first 2 pounds. Aditionally, we'll have to pay an extra 30 cents for each aditional ounce (x).

This way, the function that represents the cost to mail a package if x is the number of ounces over 2 pounds is:

`P(x)=0.30x+7`