Determine the value of x that will make the rational expression unidentified.

How did you solve each resulting equation?

Aspring is stretched 1/2 cm for every 10 kilos of weight. how far will a 24kilo weight stretched the spring? ​

Arnold and jay try the roller coaster of the newly opened amusement park. this roller coaster befins at 90 feet above the ground level. then it descends 105 feet. what would be the height of the roller coaster after the first descent