If 780 is decreased by 90%, what is the new amount

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

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

Why is it so easy to buy on impulse and overspend with a credit card? what could you do to counteract this tendency?