Question

An online retailer charges $6.99 plus $0.55 per pound to ship electronics purchases. How many pounds is a DVD player for which the shipping charge is $11.94?

Answer 1

`9\ pounds`

Explanation:

Let

x ----> the number of pounds of a DVD player

we know that

The number of pounds of a DVD player multiplied by the cost per pound ($0.55) plus the charge of $6.99 must be equal to $11.94

so

The linear equation that represent this situation is

`0.55x+6.99=11.94`

solve for x

subtract 6.99 both sides

`0.55x=11.94-6.99`

`0.55x=4.95`

divide by 0.55 both sides

`x=9\ pounds`