Solve the Problem. -The Richter Scale Measures the Magnitude M of an Earthquake

Multiple Choice

Solve the problem.
-The Richter Scale measures the magnitude M of an earthquake. An earthquake whose seismographic reading measures x millimeters 100 kilometers from the epicenter has magnitude Give
The magnitude of an earthquake that resulted in a seismographic reading of 69,161 millimeters 100 kilometers
From its epicenter. Round to the nearest tenth.

A) 8.8
B) 1.8
C) 7.8
D) 6.8