Half of your baseball card collection got wet and was ruined. you bought 19 cards to replace some that were lost. how many did you begin with if you now have 39

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?

If you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood?