70 or more for C grade. Three test grades were 75, 63, and 68. Write inequality to represent last test grade?

Assuming that there are no other assignments and that each test holds the same weight:





Let x represent the final test grade.





(75 + 63 + 68 + x)/4 ≥ 70


206 + x ≥ 280


x ≥ 74