E) a department store has marked down its merchandise by 25%. it later decreases by $5 the price of items that have not sold. a) write a function f (x) to represent the price after the 25% markdown. b) write a function g(x) to represent the price after the $5 markdown. c) use a composition function to find the price of a $125 item after both price adjustments. d) does the order in which the adjustments are applied make a difference? explain.