To get there students and chaperones will travel in buses, vans, and cars buses have 40 seats and cost $300 to rent. vand have 16 seats and cost $125 to rent. cars have 5 seats and cost $40 to rent. which is the most efficient way to transport dancers to and from the competition? how much will renting the vehicles cost?

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