What is 18/1÷4/3 can it be simplyed

Tree diagram to find the prime factors of 18

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

An equation in slope-intersept form the lines that passes thought (-8,1) and is perpindicular to the y=2x-17.