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?

1 Answer
Dec 15, 2016

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.