If point A is refeflected across the y-axis, which pair of coordinates represents the transformation? A) (5,7)
B) (7,5)
C) (-5,7)
D) (-7,-5)

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.