Maria wants to buy a new couch that costs $850. She already has $250 in her piggy bank and she is going to put away $40 per week. How long will it take for her to have
enough money to buy the couch?

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)) =

How to use order of operation in 20 divide by 4 multiply 5 = 1

What is the product? a-3/15a × 5/a-3