the water hose fills a bucket at 1/3 gallon per minute. How many minutes does it take to fill up 2-gallon bucket

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

Write the standard form of an equation with (see picture below)

Which graph of a hyperbola represents the equation 16x^2-y^2=16