1. 5m + 3m 2. y + (- fy)
3. 3.1n - 1.1n
4. -2.6c - 2.8C
5. - 3x + 12x
6. -4/22t - 5/22t PLEASE SHOW WORK HOW YOU DID THIS PLEASE ALSO SIMPLIFY ALL OF THEM PLASE PLASE

Someone answer asap for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =