Solve for x.
X - 4 =
(8x - 16)

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

What kind of bond pays interest which is exempt from tax?

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