Walter buys a bus pass for $$30.00 every time he rides the bus, money is deducted from the value of the pass. he rode the bus 12 times and $24.00 was deducted from the value of the pass. how much money does each bus ride cost

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.