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 nail a package if x is the number of ounces over 2 pounds?

Answer 1

I know that every pound is $3.50, but I am in algebra but not in word problems yet so that is all I could figure out so far.

Answer 2

7+0.30x

Explanation:

If the cost of the first two pounds for a mail package is $7, then it means that for every mail above 2 pounds, there is a constant cost of $7.

Then for each additional ounce, the cost increases by 30 cents ($0.30).

The cost function (C(x)) is therfore given by

c(x)=7+0.30x