PLEAS HELP ME I NEED THIS QUICK

Abank gives 6.5% interest per year. what is the growth factor b in this situation?

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

The average length of a king cobra is 3.7 m. the record length is 1.88 m longer than the average. how long is the record holder?