Which is the simplified form of 6w+2/3+3w

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

How do i do this? i don’t understand

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