Pls help me this is like really confusing !

What term makes it inconsistent y=2x - 4 ?

If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs

Robin spent 25% more time on his research project than he had planned he’s been an extra h ours on the project which of the following expressions could represent the number of hours rob actually spent on the project