What is the value of x in the equation 2/3 (1/2x + 12) = 1/2(1/3x + 14) – 3?

Factor this polynomial completely x^2-64

Anyone know? will mark brainliest if correct!

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.