Someone that knows geometry I’m stressed because I don’t know

Answer:
14.5
Step-by-step explanation:
[tex]\dfrac{2}{7}=\dfrac{5}{m+3}[/tex]
Multiply both sides by 7:
[tex]2=\dfrac{35}{m+3}[/tex]
Multiply both sides by m+3:
[tex]2(m+3)=35[/tex]
Simplify:
[tex]2m+6=35[/tex]
[tex]2m=29[/tex]
[tex]m=14.5[/tex]
Hope this helps!