Inequalities and ABSOULUTE VALUE!

Scoring
100%= A+ = you're REALLY smart!
91%-99% = A = you're smart!
81%-90% = B = still above average!
71%-80% = C = average, but watch out!
61%-70% = D =tsk tsk, not that great!
0%-60% = F =time to hit the books!
technicaqlly, it is impossible for you to get a B or D, but I just coppied down the standard grading system.
If I got anything wrong, please tell me in the comments!
note: there might be 2 correct answers, chose the best!
Quiz created by: Me! an annoying 11 year old!