I need a bit of help on this problem

Match each function with the corresponding function formula when h(x)=5-3x and g(x)=-3+5

If a revenue in total for a month was $9,950, fixed expenses were $9,000, and variable expenses were $300 what would be the total profit/ loss for the month?

How many and of which kind of roots does the equation f(x)=x3−x2−x+1