Answer:
a perfect score on the test
Explanation:
80 is the highest score you can get. the amount of questions she got wrong (x) is multiplied by 4 and subtracted from 80. Therefore, 80 is a perfect score.
A perfect score on a test
Since the score gets subtracted for each wrong answer, if x=0 then then nothing would get taken away from the initial 80
1.6m questions
2.0m answers