First you had to used apply the distributive law.
[tex]=-3.5*4x-(-3.5)*3\\[/tex]
Then you apply minus-plus sign rules.
[tex]=-4*3.5x+3*3.5[/tex]
Finally simplify.
[tex]-4*3.5x+3*3.5=-14x+10.5[/tex]
Final answer: [tex]\boxed{-14x+10.5}[/tex]
[tex]\boxed{C.}[/tex]
Hope this helps!
And thank you for posting your question at here on brainly, and have a great day.
-Charlie
