Manuel is putting money into a savings account. he starts with
$350 in the savings account, and each week he adds
$30. let s represent the total amount of money in the savings account (in dollars), and let
w represent the number of weeks manuel has been adding money. write an equation relating s to w. then use this equation to find the total amount of money in the savings account after
19 weeks.

Can someone answer these problems for me

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)) =

Asap! i need this done today and i really don’t understand it. some one ! will mark