There is an example there pls tell me if u can help me :(

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

What is x3+3x2−16x−48 divided by x−1?

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.