Rate mi doggo on her birthday 1-10

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

Simplify the following expression 48^1/2

Suppose that g(x)=f(x+9) which statement best compares the graph of g(x) with the graph of f(x)