A small company, uTunes, decides to try to compete with iTunes. They charge $60 to buy a membership but only $0.40 per song. a) Sofia decides to join and purchase 50 songs. How much money did she spend?

b) Her brother, Santiago, recently joined as well and he spent $110 on songs. How many songs did he purchase?

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