The Answer Is 280.. Hope This Helps
I think there's missing parts to it, but I'll work with what I have.
4x=3 is not a linear function because there is no y.
Only the slope is given and the slope alone is not a linear function only a mere part of it.
So the function is x= 3/4 not linear
Yes.
Using the distributive property 3(2x-12) = 6x-36
it's a 4.49 % increase I believe