Answer:
9x
Step-by-step explanation:
EF = 3x. FG is three times as long as EF.
3 times as long as EF means we need to multiply EF by 3
[tex]FG= 3 times EF[/tex]
[tex]FG= 3 \cdot EF[/tex]
Now replace EF by 3x
[tex]FG= 3 \cdot EF[/tex]
[tex]FG= 3 \cdot 3x[/tex]
[tex]FG= 9x[/tex]
So FG is 9x
