PLEASE HELP Potatoes cost $0.85 per pound. Luke bought 2.75 pounds of potatoes. How much did he pay for the potatoes. Round your answer to the nearest dollar.

He paid $ for the potatoes.

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

If square root x = -7, then x= -49 true or false

Could somebody me with this radical simplification?