Answer:
[tex]15x+9[/tex]
Step-by-step explanation:
We are supposed to write an expression for the given verbal description.
Let x be the required number.
Six times the number would be [tex]6x[/tex].
Eight more than six times the number would be [tex]6x+8[/tex].
Nine times the number would be [tex]9x[/tex].
One more than nine times the number would be [tex]9x+1[/tex].
Add both expressions:
[tex]6x+8+9x+1[/tex]
Combine like terms:
[tex]6x+9x+1+8[/tex]
[tex]15x+9[/tex]
Therefore, our required expression would be [tex]15x+9[/tex].
