The floor of a workshop is a rectangle 4 yards wide and 5 23 yards long . What is the area of the floor

Which shows the image of rectangle abcd after the rotation (x, y) → (–y, x)?

Convert 2000 swiss francs to dutch guilders

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)