Please help me mathematic

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.

Rectangle leg this 11feet and perimeter of 38feet what is the width of the rectangle in feet

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?