Original price 500 and the sale price is 175. discount? with work

Find two rational expressions that have the difference of 2-n/n-4

F(x) = (x^2 + 3x − 4) and g (x) = (x+4) find f/g and state the domain.

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.