Pls help me i need help with this

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.

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?