What is 5x + 2 - 4x + 3

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

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.