There are 7 movies that Christine wants to see over winter break. She only has time to see 4 of the movies. How many different groups of 4 movies are possible, if the order in which they are seen is not important?

Sherrie is baking a pie for her family. she leaves the room and comes back to 35% of the pie having been eaten before she can put the topping on. how much 1 square inch strips of dough will she need for the top, now that a portion is missing? round your answer to the nearest while nimber.