Is the sequence arithmetic? If so, find the
common difference.
11.1, 21.6, 32.2, 42.6
[A] yes, 10.4 [B] no
[C] yes, 10.7 [D] yes, 10.5

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.