Un numero dividido entre 3 y elevado al cuadrado es 729

Me write an equation for the interior angles of this triangle that uses the triangle sum theorem

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 the value of x in the equation 2(x-4) = 4(2x + 1)?