Solve for x (no need to explain but it would be best if you would because this is gonna be in my staar)

Ineed to know the rule for the sequence. plz !

What is the value of x? enter your answer in the box. photo attached.

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.