If Christian has taken 4 tests and earned grades of 95, 59, 87 and x on them and has a test average of 78.5, what grade did he earn on the fourth test (the one with the grade of x)? He earned a score of ___ on the fourth test. Round your answer to the nearest whole number.
people in Africa. African nations typically fall toward the bottom of any list measuring small size economic activity, such as income per capita or GDP per capita, despite a wealth of natural resources
