The new high-intensity discharge (HID) lights that contain xenon gas and are installed in some new cars have an expected life of 1500 hours.

The cost of the complete system is $1000

The actual life of the lights could be 10% longer or shorter than expected life of 1500 hours.

To write the inequality that gives the range of life of the new lights:

If the actual life of the lights is 10% longer than expected life of 1500 hours then, the actual life is as follows: