Casey added together all of the increases from 2000 to 2005 and subtracted the decreases. She concluded that there was about a 35% increase in gas price from 2000 to 2005. Is Casey correct? Explain why or why not.

Me what is the value of x? showing work would be appreciated - ! : )

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

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