Pls . what would be the equations for these two problems?
find the dimensions of the parking area if it must be 150,000 ft² where the width is 50 ft
more than a number and the length is 200 ft less than the width.
find the dimensions of the green space if its length must be 40 ft less than twice its
width with a total area of 33,600 ft².
i don't need the answer just equations!

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)) =