Kati and Mateo are getting ready to play a card game. To play the game they start with 222 decks of cards. Each deck has 525252 cards. They remove all 242424 face cards, and then play the game with the remaining cards. Estimate how many cards are being used for the game.

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π