Eric has scores of 74, 84, and 83 on his history tests. Use an inequality to find the scores he can make on his final exam to receive a B in the class. The final exar counts as two tests, and a B is received if the final course average is greater than or equal to 80 A Eric must score at least a on his final exam to receive a B in the class (Round to the nearest tenth as needed.) please help and show steps on how to do it!! I want to learn how to do it!!