Mrs. Gray bought some eggs. She used 1/2 of them to make tarts and 1/4 of the remainder to make a cake. She had 9 eggs left. How many eggs did she buy?

The nature park has a pride of 5 adult lions and 3 cubs. the adults eat 8 pounds of meat each day and the cubs eat 4 pounds. how much meat do the cubs and lions eat?

How can constraints be used to model a real-world situation?

Which image (a’ b’ c’ d’) of abcd cannot he produced using only reflections ?