( 9 ) If the curve of the function f intersects the curve of the function f-1 at the point (k , 2 k - 3) , then k =
(a) 2
(b) 3
(d) 5
(c) 4

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)) =

Find the area of the regular hexagon if a side is 20 cm.

Pranza plotted point a in the coordinate plane below.