Let's begin by listing out the information given to us:
Tween refers to a child aged 10-14 years
The difference between a tween (y) and a child aged 3-5 years (x) is 610 minutes
[tex]y-x=610[/tex]How much screen time does the average tween (y) have is gotten by making y the subject of the equation. We have:
[tex]\begin{gathered} y-x=610 \\ \text{Add x to both sides, we have:} \\ y-x+x=610+x \\ y=610+x \end{gathered}[/tex]The screen time of the average tween is y = 610 + x
