Mr. Stewart put $2000 in an investment account that increases his total investment amount by 10% every month. Mr. Stewart wants to double his money. Write an equation that will help Mr. Stewart determine how many months (t) it will take to double his investment.

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