Can someone me understand this question?
part a: virginia earned $14 walking her neighbors' dogs on saturday. she earned some extra money on sunday doing the same thing. write an expression with a variable that shows the total amount of money virginia earned saturday and sunday.
part b: virginia was able to walk 2 less than twice as many dogs as her friend alicia. write an algebraic expression to represent the number of dogs virginia walked compared with alicia.

Someone answer this asap rn 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)) =