There are 18 fish in a pond. 9 carp, 8 koi, and 1 trout. what is the probability of picking a koi if you pick a fish at random?

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.