What is the mapping rule for a 180 degree rotation about the origin? O (x, y)=(y, x)
O(x, y)-(y, -x)
O(x, y)(-x, y)
O(x, y)=(x, y)
PLZ HELP

The intensity, or loudness, of a sound can be measured in decibels (db), according to the equation 0b is the intensity of a given sound and lo is the threshold of hearing intensity. what is the intensity, in decibels, [l(db)], when 1 - 10"(%)? use a calculator. round to the nearest whole number a. 15. b. 32 c. 320 d. 737