What is 10 plus 1? This is really hard please help!!

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

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.

Collin did the work to see if 10 is a solution to the equation r/4=2.4