What is a possible turning point for the continuous function f(x)

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

What is the quotient of m^6/5 ÷ 5/m^2? assume m does not equal pl

What is the product? a-3/15a × 5/a-3