Selena's family went on a trip. the total hotel bill was $659. the cost of the airfare was $633. use mental math to find the total cost for the hotel and the air fare.

David must install fencing around a lot that is shaped like a right angle. the side of lot that runs east-west is 200 ft long. the side of the lot runs north-south is 125 ft long. calculate how many feet of fencing he will need to surround the entire lot.

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

All of the following ordered pairs satisfy the function rule y=-2x-1 except.