When you woke up this morning, the temperature was -3.4°c. at bedtime, the temperature was 1.7°c. which expression and statement describes the situation? -3.4> 1.7, so -3.4°c is warmer than 1.7°c. 1.7=12(-3.4), so 1.7°c is half as cold as -3.4°c. 1.7> -3.4, so 1.7°c is warmer than -3.4°c. 1.7< -3.4, so 1.7°c is colder than -3.4°c.

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