Question

An online retailer charges $699 plus $0.55 per pound o ship electronics purchases. How many pounds is a DVD player for which the shipping charge is $11.94?

Answer 1

The answer is approximately `21.71` pounds.

Explanation:

1. Write a "let" statement:
   Let the variable `x` represent the number of pounds of an item.

2. Create an equation:
   Since it costs `$0.55`/pound, we can use the expression `0.55x` to represent the shipping cost of an item that is `x` pounds. In addition, since you want the total to be `$11.94`, you can set the equation to be: `0.55x = 11.94`

3. Solve for `x`:
   In order to do this, we have to isolate `x`. We can do this by dividing each side by `0.55`
   `(cancel0.55x)/cancel0.55 = 11.94/0.55" "` the two `0.55`'s cancel out.

4. In the end, we are left with roughly `x = 21.71`, which means that the DVD player is approximately `21.71` pounds.