Write the equation of the circle with center (0, 0) and (−4, 5) a point on the circle.

At which value in the domain does f(x) =0?

Complete the equation of the line through (−10,3) and (−8,−8). use exact numbers.

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.