Answer:
[tex]9\ pounds[/tex]
Step-by-step 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
[tex]0.55x+6.99=11.94[/tex]
solve for x
subtract 6.99 both sides
[tex]0.55x=11.94-6.99[/tex]
[tex]0.55x=4.95[/tex]
divide by 0.55 both sides
[tex]x=9\ pounds[/tex]
