louis has five more than half of the cards in a collector's set. liam has ten fewer than three fourths of the card if louis and liam have the same number of cards how many cards a r. c e in the collector's set

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

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)) =

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great