Perform the operation indicated, then place the answer in the proper location on the grid. write your answer in descending powers of m. (5m 3 + 3mn 2) + (-7m 2 n + mn 2 - n 3) - (mn 2 + 2m 3)

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.