Can someone help me solve this step by step?

What are the coordinates of the image of p for a dilation with center (0, 0) and scale factor 2

The diameter of the moon is about 3500 km. approximate the surface area of the moon using the formula for the surface area of a sphere, s = 4πr2. write your answer in scientific notation.

The water level in the aquarium's shark tank is always greater than 25 feet. if the water level decreases by 6 feet during cleaning, what was the water level before the cleaners took out any water?