Answer:
[tex]2(b - 9) \geqslant 26[/tex]
Step-by-step explanation:
difference of a number and 9 means to subtract
[tex]b - 9[/tex]
twice that means multiply by 2
[tex]2(b - 9)[/tex]
at least is greater than or equal to
[tex]2(b - 9) \geqslant 26[/tex]