Which two asymptotes can you NOT have at the same time?

Average acceleration: i have no idea how to do this.

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.

Aremote-controlled boat can travel at 4 feet per second in calm water. the boat traveled 48 feet with the current, and then it traveled 16 feet against the current in the same amount of time. how fast is the current?