Rob measures his go-cart’s speed to be 250 inches per second. what is the go-cart’s speed in miles per hour (to the nearest tenth) ? a) 7.1 mph b) 14.2 mph c) 28.4 mph d) 35.2 mph

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