4. David and Ted are walking a trail. Ted walks 3.1 kilometers farther than David. Part A Write an equation for the number of kilometers David walks, d, if Ted walks 5.4 kilometers. Part B Write an equation for the number of kilometers Ted walks, t, if David walks 4.9 kilometers. Part C Fill in the blanks to tell the distance David and Ted walk. If Ted walks 5.4 kilometers, then David walks kilometers. if David walks 4.9 kilometers, then Ted walks how many kilometers?​

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)) =