You find $13.20 on the ground at school, all in nicke's, dirnes and quarters. You have lwice as many quarters
as dimes and 84 coins in all

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.