7. nick’s youth group has 20 regular students that attend weekly get togethers. they saved up enough money for each person to go swimming 10 times each with the daily pay plan. after they saved that amount, they found out they can use the early pay plan and save money. they plan to donate their savings to the church since it’s in need of a new sound system. how much money will they be able to donate with the savings from all 20 youth? ( show all your work for full credit)
will give briliest

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)) =